jquery.anystretch.min.js

/*
 * jQuery Anystretch
 * Version 1.2 (@jbrooksuk / me.itslimetime.com)
 * https://github.com/jbrooksuk/jquery-anystretch
 * Based on Dan Millar's Port
 * https://github.com/danmillar/jquery-anystretch
 *
 * Add a dynamically-resized background image to the body
 * of a page or any other block level element within it
 *
 * Copyright (c) 2012 Dan Millar (@danmillar / decode.uk.com)
 * Dual licensed under the MIT and GPL licenses.
 *
 * This is a fork of jQuery Backstretch (v1.2)
 * Copyright (c) 2011 Scott Robbin (srobbin.com)
*/
(function(a){a.fn.anystretch=function(d,c,e){var b=this.selector.length?false:true;return this.each(function(q){var s={positionX:"center",positionY:"center",speed:0,elPosition:"relative",dataName:"stretch"},h=a(this),g=b?a(".anystretch"):h.children(".anystretch"),l=g.data("settings")||s,m=g.data("settings"),j,f,r,p,v,u;if(c&&typeof c=="object"){a.extend(l,c)}if(c&&typeof c=="function"){e=c}a(document).ready(t);return this;function t(){if(d||h.length>=1){var i;if(!b){h.css({position:l.elPosition,background:"none"})}if(g.length==0){g=a("<div />").attr("class","anystretch").css({left:0,top:0,position:(b?"fixed":"absolute"),overflow:"hidden",zIndex:(b?-999999:-999998),margin:0,padding:0,height:"100%",width:"100%"})}else{g.find("img").addClass("deleteable")}i=a("<img />").css({position:"absolute",display:"none",margin:0,padding:0,border:"none",zIndex:-999999}).bind("load",function(A){var z=a(this),y,x;z.css({width:"auto",height:"auto"});y=this.width||a(A.target).width();x=this.height||a(A.target).height();j=y/x;o(function(){z.fadeIn(l.speed,function(){g.find(".deleteable").remove();if(typeof e=="function"){e()}})})}).appendTo(g);if(h.children(".anystretch").length==0){if(b){a("body").append(g)}else{h.append(g)}}g.data("settings",l);var w="";if(d){w=d}else{if(h.data(l.dataName)){w=h.data(l.dataName)}else{return}}i.attr("src",w);a(window).resize(o)}}function o(i){try{u={left:0,top:0};r=k();p=r/j;if(p>=n()){v=(p-n())/2;if(l.positionY=="center"||l.centeredY){a.extend(u,{top:"-"+v+"px"})}else{if(l.positionY=="bottom"){a.extend(u,{top:"auto",bottom:"0px"})}}}else{p=n();r=p*j;v=(r-k())/2;if(l.positionX=="center"||l.centeredX){a.extend(u,{left:"-"+v+"px"})}else{if(l.positionX=="right"){a.extend(u,{left:"auto",right:"0px"})}}}g.children("img:not(.deleteable)").width(r).height(p).filter("img").css(u)}catch(w){}if(typeof i=="function"){i()}}function k(){return b?h.width():h.innerWidth()}function n(){return b?h.height():h.innerHeight()}})};a.anystretch=function(d,b,e){var c=("onorientationchange" in window)?a(document):a(window);c.anystretch(d,b,e)}})(jQuery);