// ie image caching bug fix
	try {
  		document.execCommand("BackgroundImageCache", false, true);
	} catch(err) {}


	function trOver(trObj, cssClass)
	{
		for(td=0; td < trObj.childNodes.length; td++)
		{
			trObj.childNodes[td].className = cssClass; 
		}
	}
		
	function getCheckedRadioValue(radioObj) 
	{	
		var radioLength = radioObj.length;
		
		if(radioLength == undefined)
		{
			if(radioObj.checked)
				return radioObj.value;
			else
				return "";
		}
				
		for(var i=0; i < radioLength; i++) 
		{
			if(radioObj[i].checked) 
			{
				return radioObj[i].value;
			}
		}
		return "";
	}	
		
	function isMail(adress)
	{		
		var filter  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;		
		return filter.test(adress);
	}

	function changeClass(Obj, newClass)
	{
		Obj.className = newClass;				
	}
	
	/**
	 * Returns the value of the selected radio button in the radio group
	 * 
	 * @param {radio Object} or {radio id} el
	 * OR
	 * @param {form Object} or {form id} el
	 * @param {radio group name} radioGroup
	 */
	function $RF(el, radioGroup) {
		if($(el).type == 'radio') {
			var el = $(el).form;
			var radioGroup = $(el).name;
		} else if ($(el).tagName.toLowerCase() != 'form') {
			return false;
		}
		return $F($(el).getInputs('radio', radioGroup).find(
			function(re) {return re.checked;}
		));
	}
	
	function doPopup(popupPath, popupName, pxWidth, pxHeight)
	{
		var left = (screen.width - pxWidth) / 2;
		var top = (screen.height - pxHeight) / 2;
		
		return window.open(popupPath, popupName, "left="+left+",top="+top+",width="+pxWidth+",height="+pxHeight+",resizable=NO,scrollbars=NO");
	}