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utils.js
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utils.js
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//////////////////////////// Make inheritance bearable
MM.extend = function(child, parent) {
for (var property in parent.prototype) {
if (typeof child.prototype[property] == "undefined") {
child.prototype[property] = parent.prototype[property];
}
}
return child;
};
/////////////////////////// Eeeeeeeeeeeeeeeeeeeeeevents
MM.cancelEvent = function(e) {
//console.log('cancel: ' + e);
// there's more than one way to skin this cat
e.cancelBubble = true;
e.cancel = true;
e.returnValue = false;
if (e.stopPropagation) { e.stopPropagation(); }
if (e.preventDefault) { e.preventDefault(); }
return false;
};
// see http://ejohn.org/apps/jselect/event.html for the originals
MM.addEvent = function(obj, type, fn) {
if (obj.attachEvent) {
obj['e'+type+fn] = fn;
obj[type+fn] = function(){ obj['e'+type+fn](window.event); };
obj.attachEvent('on'+type, obj[type+fn]);
} else {
obj.addEventListener(type, fn, false);
if (type == 'mousewheel') {
obj.addEventListener('DOMMouseScroll', fn, false);
}
}
};
MM.removeEvent = function( obj, type, fn ) {
if ( obj.detachEvent ) {
obj.detachEvent('on'+type, obj[type+fn]);
obj[type+fn] = null;
} else {
obj.removeEventListener(type, fn, false);
if (type == 'mousewheel') {
obj.removeEventListener('DOMMouseScroll', fn, false);
}
}
};
/////////////////////////////
MM.getStyle = function(el,styleProp) {
if (el.currentStyle)
var y = el.currentStyle[styleProp];
else if (window.getComputedStyle)
var y = document.defaultView.getComputedStyle(el,null).getPropertyValue(styleProp);
return y;
};