/CSS-Filters-Polyfill

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CSS-Filters-Polyfill/lib/css-filters-polyfill.js
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/*!
* css-filters-polyfill.js
*
* Author: Christian Schepp Schaefer
* Summary: A polyfill for CSS filter effects
* License: MIT
* Version: 0.3.0
*
* URL:
* https://github.com/Schepp/
*
*/
;(function(window){
var polyfilter = {
// Detect if we are dealing with IE <= 9
// http://james.padolsey.com/javascript/detect-_ie-in-js-using-conditional-comments/
_ie: (function(){
var undef,
v = 3,
div = document.createElement('div'),
all = div.getElementsByTagName('i');
while(
div.innerHTML = '<!--[if gt IE ' + (++v) + ']><i></i><![endif]-->',
all[0]
);
return v > 4 ? v : undef;
}()),
_svg_cache: {},
_create_svg_element: function(tagname,attributes){
var xmlns = 'http://www.w3.org/2000/svg';
var elem = document.createElementNS(xmlns,tagname);
for(key in attributes){
elem.setAttributeNS(null,key,attributes[key]);
}
return elem;
},
_create_svg: function(id,filterelements){
var xmlns = 'http://www.w3.org/2000/svg';
var svg = document.createElementNS(xmlns,'svg');
svg.setAttributeNS(null,'width','0');
svg.setAttributeNS(null,'height','0');
svg.setAttributeNS(null,'style','position:absolute');
var svg_filter = document.createElementNS(xmlns,'filter');
svg_filter.setAttributeNS(null,'id',id);
svg.appendChild(svg_filter);
for(var i = 0; i < filterelements.length; i++){
svg_filter.appendChild(filterelements[i]);
}
return svg;
},
_pending_stylesheets: 0,
_stylesheets: [],
process_stylesheets: function(){
var xmlHttp = [];
// Check if path to library is correct, do that 2 secs. after this to not disturb initial processing
window.setTimeout(function(){
if (window.XMLHttpRequest) {
var xmlHttpCheck = new XMLHttpRequest();
} else if (window.ActiveXObject) {
var xmlHttpCheck = new ActiveXObject("Microsoft.XMLHTTP");
}
xmlHttpCheck.open('GET', window.polyfilter_scriptpath + 'css-filters-polyfill-parser.js', true);
xmlHttpCheck.onreadystatechange = function(){
if(xmlHttp.readyState == 4 && xmlHttp.status != 200){
alert('The configured path \r\rvar polyfilter_scriptpath = "' + window.polyfilter_scriptpath + '"\r\rseems wrong!\r\rConfigure the polyfill\'s correct absolute(!) script path before referencing the css-filters-polyfill.js, like so:\r\rvar polyfilter_scriptpath = "/js/css-filters-polyfill/";\r\rLeaving IE dead in the water is no option. You damn Mac user... ;)');
}
};
try{
xmlHttpCheck.send(null);
} catch(e){}
},2000);
// Is the polyfill supposed to automatically fetch and parse all stylesheets (polyfilter_skip_stylesheets: false)? (default)
// Or do you rather prefer to apply filters only via JavaScript (polyfilter_skip_stylesheets: true)?
// Configure via var polyfilter_skip_stylesheets = (true|false); before loading the polyfill script
if(!window.polyfilter_skip_stylesheets){
var stylesheets = document.querySelectorAll ? document.querySelectorAll('style,link[rel="stylesheet"]') : document.getElementsByTagName('*');
for(var i = 0; i < stylesheets.length; i++){
(function(i){
switch(stylesheets[i].nodeName){
default:
break;
case 'STYLE':
polyfilter._stylesheets.push({
media: stylesheets[i].media || 'all',
content: stylesheets[i].innerHTML
});
break;
case 'LINK':
if(stylesheets[i].rel === 'stylesheet'){
var index = polyfilter._stylesheets.length;
polyfilter._stylesheets.push({
media: stylesheets[i].media || 'all'
});
polyfilter._pending_stylesheets++;
// Fetch external stylesheet
var href = stylesheets[i].href;
// Always fetch stylesheets to reflect possible changes
try{
if(window.XMLHttpRequest) {
var xmlHttp = new XMLHttpRequest();
} else if(window.ActiveXObject) {
var xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
}
xmlHttp.open('GET', href, true);
xmlHttp.onreadystatechange = function(){
if(xmlHttp.readyState === 4){
if(xmlHttp.status === 0){
if(window.console) console.log('Could not fetch external CSS via HTTP-Request ' + href + '. Probably because of cross origin limitations. Try turning on CORS headers on the machine serving the stylesheets, like so: https://gist.github.com/Schepp/6338742');
if(!polyfilter._stylesheets[index].content){
polyfilter._pending_stylesheets--;
polyfilter._stylesheets[index].content = xmlHttp.responseText;
if(polyfilter._pending_stylesheets === 0){
polyfilter.process();
}
}
} else {
if(!polyfilter._stylesheets[index].content){
polyfilter._pending_stylesheets--;
polyfilter._stylesheets[index].content = xmlHttp.responseText;
if(polyfilter._pending_stylesheets === 0){
polyfilter.process();
}
}
}
}
};
try{
xmlHttp.send(null);
} catch(e){
if(window.console) console.log('Could not fetch external CSS via HTTP-Request ' + href + '. Are you maybe testing using the file://-protocol?');
if(!polyfilter._stylesheets[index].content){
polyfilter._pending_stylesheets--;
if(polyfilter._pending_stylesheets === 0){
polyfilter.process();
}
}
}
} catch(e){}
}
break;
}
})(i);
}
if(this._pending_stylesheets === 0){
this.process();
}
}
},
_processDeclarations: function(rule){
var newstyles = '';
for(var k in rule.declarations){
var declaration = rule.declarations[k];
if(declaration.property === 'filter'){
if(document.querySelectorAll){
var elems = document.querySelectorAll(rule.mSelectorText);
for(var k = 0; k < elems.length; k++){
elems[k].style.polyfilterStore = declaration.valueText;
}
}
var gluedvalues = declaration.valueText;
var values = gluedvalues.split(/\)\s+/),
properties = {
filtersW3C: [],
filtersWebKit: [],
filtersSVG: [],
filtersIE: [],
behaviorsIE: []
};
for(idx in values){
var value = values[idx] + ')';
currentproperties = polyfilter.convert(value);
for(key in currentproperties){
if(typeof properties[key] !== 'undefined'){
properties[key] = properties[key].concat(currentproperties[key]);
}
}
}
newstyles += rule.mSelectorText + '{';
if(properties['filtersW3C'].length > 0){
var filter =
webkitFilter =
mozFilter =
oFilter =
msFilter =
properties['filtersW3C'].join(' ');
if(properties['filtersWebKit'] && properties['filtersWebKit'].length > 0){
webkitFilter = properties['filtersWebKit'].join(' ');
}
if(typeof this._ie === 'undefined'){
newstyles += '-ms-filter:' + msFilter + ';';
}
newstyles += '-webkit-filter:' + webkitFilter + ';';
newstyles += '-moz-filter:' + mozFilter + ';';
newstyles += '-o-filter:' + oFilter + ';';
}
if(properties['filtersSVG'].length > 0){
if(properties['filtersSVG'][0] != 'none'){
var id = gluedvalues.replace(/[^a-z0-9]/g,'');
if(typeof this._svg_cache[id] === 'undefined'){
this._svg_cache[id] = this._create_svg(id,properties['filtersSVG']);
if(typeof XMLSerializer === 'undefined'){
document.body.appendChild(this._svg_cache[id]);
}
else {
var s = new XMLSerializer();
var svgString = s.serializeToString(this._svg_cache[id]);
if(svgString.search('SourceGraphic') != -1){
document.body.appendChild(this._svg_cache[id]);
}
}
}
if(typeof XMLSerializer === 'undefined'){
newstyles += 'filter: url(#' + id + ')';
}
else {
var s = new XMLSerializer();
var svgString = s.serializeToString(this._svg_cache[id]);
if(svgString.search('SourceGraphic') != -1){
newstyles += 'filter: url(#' + id + ')';
}
else {
newstyles += 'filter: url(\'data:image/svg+xml;utf8,' + svgString + '#' + id + '\')';
}
}
}
else {
newstyles += 'filter: none;';
}
}
if(typeof this._ie !== 'undefined'){
if(properties['filtersIE'].length > 0){
var filtersIE = properties['filtersIE'].join(' ');
newstyles += 'filter:' + filtersIE + ';';
}
if(properties['behaviorsIE'].length > 0){
var behaviorsIE = properties['behaviorsIE'].join(' ');
newstyles += 'behavior:' + behaviorsIE + ';';
}
}
newstyles += '}\r\n';
}
}
return newstyles;
},
// Absolute path to the .htc-files
// Configure via var polyfilter_scriptpath = "/js/css-filters-polyfill/"; before loading the polyfill script
scriptpath:
window.polyfilter_scriptpath ? window.polyfilter_scriptpath : (function(){
alert('Please configure the polyfill\'s absolute(!) script path before referencing the css-filters-polyfill.js, like so:\r\nvar polyfilter_scriptpath = "/js/css-filters-polyfill/";');
return './'
})(),
// process stylesheets
process: function(){
if(!window.Worker){
var parser = new CSSParser();
}
else {
var worker = new Worker(this.scriptpath + 'css-filters-polyfill-parser.js');
worker.addEventListener('message', function(e) {
polyfilter.create(e.data.content, e.data.media);
}, false);
}
for(var i = 0; i < this._stylesheets.length; i++){
if(!window.Worker){
var sheet = parser.parse(this._stylesheets[i].content, false, true);
this.create(sheet,this._stylesheets[i].media);
}
else {
worker.postMessage(this._stylesheets[i]);
}
}
},
// create filter stylesheets
create: function(sheet,media){
var newstyles = '';
if(sheet !== null) for(var j in sheet.cssRules){
var rule = sheet.cssRules[j];
switch(rule.type){
default:
break;
case 1:
newstyles += this._processDeclarations(rule);
break;
case 4:
newstyles += '@media ' + rule.media.join(',') + '{';
for(var k in rule.cssRules){
var mediarule = rule.cssRules[k];
newstyles += this._processDeclarations(mediarule);
}
newstyles += '}';
break;
}
}
var newstylesheet = document.createElement('style');
newstylesheet.setAttribute('media',media);
if(typeof polyfilter._ie === 'undefined'){
newstylesheet.innerHTML = newstyles;
document.getElementsByTagName('head')[0].appendChild(newstylesheet);
}
else {
document.getElementsByTagName('head')[0].appendChild(newstylesheet);
newstylesheet.styleSheet.cssText = newstyles;
}
},
init: function(){
if(Object.defineProperty){
Object.defineProperty(CSSStyleDeclaration.prototype, 'polyfilter', {
get: function(){
return this.polyfilterStore;
},
set: function(gluedvalues){
values = gluedvalues.split(/\)\s+/);
var properties = {
filtersW3C: [],
filtersWebKit: [],
filtersSVG: [],
filtersIE: [],
behaviorsIE: []
}
for(idx in values){
var value = values[idx] + ')';
currentproperties = polyfilter.convert(value);
for(key in currentproperties){
if(typeof properties[key] !== 'undefined'){
properties[key] = properties[key].concat(currentproperties[key]);
}
}
}
if(properties['filtersW3C'].length > 0){
if(typeof polyfilter._ie === 'undefined'){
this.msFilter =
properties['filtersW3C'].join(' ');
}
this.webkitFilter =
this.mozFilter =
this.oFilter =
properties['filtersW3C'].join(' ');
}
if(properties['filtersWebKit'].length > 0){
this.webkitFilter = properties['filtersWebKit'].join(' ');
}
if(properties['filtersSVG'].length > 0){
if(properties['filtersSVG'][0] != 'none'){
var id = gluedvalues.replace(/[^a-z0-9]/g,'');
if(typeof polyfilter._svg_cache[id] === 'undefined'){
polyfilter._svg_cache[id] = polyfilter._create_svg(id,properties['filtersSVG']);
if(typeof XMLSerializer === 'undefined'){
document.body.appendChild(polyfilter._svg_cache[id]);
}
else {
var s = new XMLSerializer();
var svgString = s.serializeToString(polyfilter._svg_cache[id]);
if(svgString.search('SourceGraphic') != -1){
document.body.appendChild(polyfilter._svg_cache[id]);
}
}
}
if(typeof XMLSerializer === 'undefined'){
this.filter = 'url(#' + id + ')';
}
else {
var s = new XMLSerializer();
var svgString = s.serializeToString(polyfilter._svg_cache[id]);
if(svgString.search('SourceGraphic') != -1){
this.filter = 'url(#' + id + ')';
}
else {
this.filter = 'url(\'data:image/svg+xml;utf8,' + svgString + '#' + id + '\')';
}
}
}
else {
this.filter = 'none';
}
}
if(typeof polyfilter._ie !== 'undefined'){
if(properties['filtersIE'].length > 0){
this.filter =
properties['filtersIE'].join(' ');
}
else {
this.filter = '';
}
if(properties['behaviorsIE'].length > 0){
this.behavior =
properties['behaviorsIE'].join(' ');
}
else {
this.behavior = '';
}
}
this.polyfilterStore = gluedvalues;
}
});
}
},
convert: function(value){
// None
var fmatch = value.match(/none/i);
if(fmatch !== null){
var properties = this.filters.none();
}
// Grayscale
var fmatch = value.match(/(grayscale)\(([0-9\.]+)\)/i);
if(fmatch !== null){
var amount = parseFloat(fmatch[2],10),
properties = this.filters.grayscale(amount);
}
// Sepia
var fmatch = value.match(/(sepia)\(([0-9\.]+)\)/i);
if(fmatch !== null){
var amount = parseFloat(fmatch[2],10),
properties = this.filters.sepia(amount);
}
// Blur
var fmatch = value.match(/(blur)\(([0-9]+)[px]*\)/i);
if(fmatch !== null){
var amount = parseInt(fmatch[2],10),
properties = this.filters.blur(amount);
}
// Invert
var fmatch = value.match(/(invert)\(([0-9\.]+)\)/i);
if(fmatch !== null){
var amount = parseFloat(fmatch[2],10),
properties = this.filters.invert(amount);
}
// Brightness
var fmatch = value.match(/(brightness)\(([0-9\.]+)%\)/i);
if(fmatch !== null){
var amount = parseFloat(fmatch[2],10),
properties = this.filters.brightness(amount);
}
// Saturate
var fmatch = value.match(/(saturate)\(([0-9\.]+)%\)/i);
if(fmatch !== null){
var amount = parseFloat(fmatch[2],10),
properties = this.filters.saturate(amount);
}
// Hue Rotate
var fmatch = value.match(/(hue-rotate)\(([0-9\.]+)deg\)/i);
if(fmatch !== null){
var amount = parseFloat(fmatch[2],10),
properties = this.filters.hueRotate(amount);
}
// Drop Shadow
var fmatch = value.match(/(drop\-shadow)\(([0-9]+)[px]*\s+([0-9]+)[px]*\s+([0-9]+)[px]*\s+([#0-9]+)\)/i);
if(fmatch !== null){
var offsetX = parseInt(fmatch[2],10),
offsetY = parseInt(fmatch[3],10),
radius = parseInt(fmatch[4],10),
color = fmatch[5],
properties = this.filters.dropShadow(offsetX,offsetY,radius,color);
}
return properties;
},
// EFFECTS SECTION -------------------------------------------------------------------------------------------------------------
filters: {
// None
none: function(){
var properties = {};
if(typeof polyfilter._ie === 'undefined'){
// Proposed spec
properties['filtersW3C'] = ['none'];
// Firefox
properties['filtersSVG'] = ['none'];
}
else {
// IE
properties['filtersIE'] = ['none'];
}
return properties;
},
// Grayscale
grayscale: function(amount){
amount = amount || 0;
var properties = {};
if(typeof polyfilter._ie === 'undefined'){
// Proposed spec
properties['filtersW3C'] = ['grayscale(' + amount + ')'];
// Firefox
// https://dvcs.w3.org/hg/FXTF/raw-file/tip/filters/index.html
var svg_fe1 = polyfilter._create_svg_element('feColorMatrix',{
type: 'matrix',
values: (0.2126 + 0.7874 * (1 - amount)) + ' '
+ (0.7152 - 0.7152 * (1 - amount)) + ' '
+ (0.0722 - 0.0722 * (1 - amount)) + ' 0 0 '
+ (0.2126 - 0.2126 * (1 - amount)) + ' '
+ (0.7152 + 0.2848 * (1 - amount)) + ' '
+ (0.0722 - 0.0722 * (1 - amount)) + ' 0 0 '
+ (0.2126 - 0.2126 * (1 - amount)) + ' '
+ (0.7152 - 0.7152 * (1 - amount)) + ' '
+ (0.0722 + 0.9278 * (1 - amount)) + ' 0 0 0 0 0 1 0'
});
properties['filtersSVG'] = [svg_fe1];
}
else {
// IE
properties['filtersIE'] = amount >= 0.5 ? ['gray'] : [];
}
return properties;
},
// Sepia
sepia: function(amount){
amount = amount || 0;
var properties = {};
if(typeof polyfilter._ie === 'undefined'){
// Proposed spec
properties['filtersW3C'] = ['sepia(' + amount + ')'];
// Firefox
// https://dvcs.w3.org/hg/FXTF/raw-file/tip/filters/index.html
var svg_fe1 = polyfilter._create_svg_element('feColorMatrix',{
type: 'matrix',
values: (0.393 + 0.607 * (1 - amount)) + ' '
+ (0.769 - 0.769 * (1 - amount)) + ' '
+ (0.189 - 0.189 * (1 - amount)) + ' 0 0 '
+ (0.349 - 0.349 * (1 - amount)) + ' '
+ (0.686 + 0.314 * (1 - amount)) + ' '
+ (0.168 - 0.168 * (1 - amount)) + ' 0 0 '
+ (0.272 - 0.272 * (1 - amount)) + ' '
+ (0.534 - 0.534 * (1 - amount)) + ' '
+ (0.131 + 0.869 * (1 - amount)) + ' 0 0 0 0 0 1 0'
});
properties['filtersSVG'] = [svg_fe1];
}
else {
// IE
properties['filtersIE'] = amount >= 0.5 ? ['gray','progid:DXImageTransform.Microsoft.Light()'] : [];
properties['behaviorsIE'] = amount >= 0.5 ? ['url("' + polyfilter.scriptpath + 'htc/sepia.htc")'] : [];
}
return properties;
},
// Blur
blur: function(amount){
amount = Math.round(amount) || 0;
var properties = {};
if(typeof polyfilter._ie === 'undefined'){
// Proposed spec
properties['filtersW3C'] = ['blur(' + amount + 'px)'];
// Firefox
// https://dvcs.w3.org/hg/FXTF/raw-file/tip/filters/index.html
var svg_fe1 = polyfilter._create_svg_element('feGaussianBlur',{
'in': 'SourceGraphic',
stdDeviation: amount
});
properties['filtersSVG'] = [svg_fe1];
}
else {
// IE
properties['filtersIE'] = ['progid:DXImageTransform.Microsoft.Blur(pixelradius=' + amount + ')'];
}
return properties;
},
// Invert
invert: function(amount){
amount = amount || 0;
var properties = {};
if(typeof polyfilter._ie === 'undefined'){
// Proposed spec
properties['filtersW3C'] = ['invert(' + amount + ')'];
// Firefox
// https://dvcs.w3.org/hg/FXTF/raw-file/tip/filters/index.html
var svg_fe1 = polyfilter._create_svg_element('feComponentTransfer',{
'color-interpolation-filters': 'sRGB'
});
var svg_fe1sub = polyfilter._create_svg_element('feFuncR',{
type: 'table',
tableValues: amount + ' ' + (1 - amount)
});
svg_fe1.appendChild(svg_fe1sub);
var svg_fe1sub = polyfilter._create_svg_element('feFuncG',{
type: 'table',
tableValues: amount + ' ' + (1 - amount)
});
svg_fe1.appendChild(svg_fe1sub);
var svg_fe1sub = polyfilter._create_svg_element('feFuncB',{
type: 'table',
tableValues: amount + ' ' + (1 - amount)
});
svg_fe1.appendChild(svg_fe1sub);
properties['filtersSVG'] = [svg_fe1];
}
else {
// IE
properties['filtersIE'] = amount >= 0.5 ? ['invert'] : [];
}
return properties;
},
// Brightness
brightness: function(amount){
amount = amount || 0;
var properties = {};
if(typeof polyfilter._ie === 'undefined'){
// Proposed spec
properties['filtersW3C'] = ['brightness(' + amount + '%)'];
// WebKit "specialty"
// properties['filtersWebKit'] = ['brightness(' + (amount - 100) + '%)'];
// Firefox
// https://dvcs.w3.org/hg/FXTF/raw-file/tip/filters/index.html
var svg_fe1 = polyfilter._create_svg_element('feComponentTransfer',{
'color-interpolation-filters': 'sRGB'
});
var svg_fe1sub = polyfilter._create_svg_element('feFuncR',{
type: 'linear',
slope: amount / 100
});
svg_fe1.appendChild(svg_fe1sub);
var svg_fe1sub = polyfilter._create_svg_element('feFuncG',{
type: 'linear',
slope: amount / 100
});
svg_fe1.appendChild(svg_fe1sub);
var svg_fe1sub = polyfilter._create_svg_element('feFuncB',{
type: 'linear',
slope: amount / 100
});
svg_fe1.appendChild(svg_fe1sub);
properties['filtersSVG'] = [svg_fe1];
}
else {
// IE
properties['filtersIE'] = ['progid:DXImageTransform.Microsoft.Light()'];
properties['behaviorsIE'] = ['url("' + polyfilter.scriptpath + 'htc/brightness.htc")'];
}
return properties;
},
// Saturate
saturate: function(amount){
amount = amount || 0;
var properties = {};
if(typeof polyfilter._ie === 'undefined'){
// Proposed spec
properties['filtersW3C'] = ['saturate(' + amount + '%)'];
// Firefox
// https://dvcs.w3.org/hg/FXTF/raw-file/tip/filters/index.html
var svg_fe1 = polyfilter._create_svg_element('feColorMatrix',{
type: 'saturate',
values: amount / 100
});
properties['filtersSVG'] = [svg_fe1];
}
return properties;
},
// Hue Rotate
hueRotate: function(amount){
amount = amount || 0;
var properties = {};
if(typeof polyfilter._ie === 'undefined'){
// Proposed spec
properties['filtersW3C'] = ['hue-rotate(' + amount + 'deg)'];
// Firefox
// https://dvcs.w3.org/hg/FXTF/raw-file/tip/filters/index.html
var svg_fe1 = polyfilter._create_svg_element('feColorMatrix',{
type: 'hueRotate',
values: amount
});
properties['filtersSVG'] = [svg_fe1];
}
return properties;
},
// Drop Shadow
dropShadow: function(offsetX,offsetY,radius,color){
offsetX = Math.round(offsetX) || 0;
offsetY = Math.round(offsetY) || 0;
radius = Math.round(radius) || 0;
color = color || '#000000';
var properties = {};
if(typeof polyfilter._ie === 'undefined'){
// Proposed spec
properties['filtersW3C'] = ['drop-shadow(' + offsetX + 'px ' + offsetY + 'px ' + radius + 'px ' + color + ')'];
// Firefox
// https://dvcs.w3.org/hg/FXTF/raw-file/tip/filters/index.html
var svg_fe1 = polyfilter._create_svg_element('feGaussianBlur',{
'in': 'SourceAlpha',
stdDeviation: radius
});
var svg_fe2 = polyfilter._create_svg_element('feOffset',{
dx: offsetX + 1,
dy: offsetY + 1,
result: 'offsetblur'
});
var svg_fe3 = polyfilter._create_svg_element('feFlood',{
'flood-color': color
});
var svg_fe4 = polyfilter._create_svg_element('feComposite',{
in2: 'offsetblur',
operator: 'in'
});
var svg_fe5 = polyfilter._create_svg_element('feMerge',{});
var svg_fe5sub = polyfilter._create_svg_element('feMergeNode',{});
svg_fe5.appendChild(svg_fe5sub);
var svg_fe5sub = polyfilter._create_svg_element('feMergeNode',{
'in': 'SourceGraphic'
});
svg_fe5.appendChild(svg_fe5sub);
properties['filtersSVG'] = [svg_fe1,svg_fe2,svg_fe3,svg_fe4,svg_fe5];
}
else {
// IE
properties['filtersIE'] = ['progid:DXImageTransform.Microsoft.Glow(color=' + color + ',strength=0)','progid:DXImageTransform.Microsoft.Shadow(color=' + color + ',strength=0)'];
properties['behaviorsIE'] = ['url("' + polyfilter.scriptpath + 'htc/drop-shadow.htc")'];
}
return properties;
}
}
}
// Inialize, either via jQuery...
if(window.jQuery){
window.jQuery(document).ready(function(e) {
polyfilter.process_stylesheets();
});
}
// or via contentLoaded...
else if(window.contentLoaded){
contentLoaded(window,function(){
polyfilter.process_stylesheets();
});
}
// or on DOM ready / load
else {
if(window.addEventListener) // W3C standard
{
document.addEventListener('DOMContentLoaded', function(){
polyfilter.process_stylesheets();
}, false);
}
else if(window.attachEvent) // Microsoft
{
window.attachEvent('onload', function(){
polyfilter.process_stylesheets();
});
}
}
// Install style setters and getters
polyfilter.init();
})(window);