function prepImage(){
		var objImages = document.images;
		
		for(var i = 0; i < objImages.length; i++){
			if (objImages[i].src.indexOf("_off") > 0){
				objImages[i].onMouseover=imageOver;
				
				alert("Images onmouseover event: " + objImages[i].onMouseover);
			}
		}
	}
	
	function imageOver(srcElement){
		//var srcElement = window.event.srcElement;
		var imageName_off  = "";
		var imageName_on  = "";
		
		if (srcElement.tagName == "IMG") {
			if (srcElement.src.indexOf("_off") > 0){
				imageName_off	= srcElement.src.split("/")[srcElement.src.split("/").length-1];
				imageName_on	= imageName_off.replace("_off", "_on");
				
				str_NewImage	= srcElement.src.replace(imageName_off, imageName_on);
				srcElement.src	= str_NewImage;
			}
		}
	}
	
	function imageOff(srcElement){
		//var srcElement = window.event.srcElement;
		var imageName_off  = "";
		var imageName_on  = "";
		
		if (srcElement.tagName == "IMG") {
			if (srcElement.src.indexOf("_on") > 0){
				imageName_on	= srcElement.src.split("/")[srcElement.src.split("/").length-1];
				imageName_off	= imageName_on.replace("_on", "_off");
				
				str_NewImage	= srcElement.src.replace(imageName_on, imageName_off);
				srcElement.src	= str_NewImage;
			}
		}
	}
	
	function swapBg(srcElement){
		var sourceBGImage  		= srcElement.className;
		var replacementBGImage  = "";
		
		if (sourceBGImage.indexOf("on_") > -1) {
			replacementBGImage = sourceBGImage.replace("on_", "off_");
		} else if (sourceBGImage.indexOf("off_") > -1) {
			replacementBGImage = sourceBGImage.replace("off_", "on_");
		}
		
		srcElement.className = replacementBGImage;
	}
	
	/*document.onload = prepImage();
	document.onmouseover = imageOver();
	document.onmouseout = imageOff();*/