function rollover(el)
{
	if(el){
		var newImg="";
		var newPath="";		
		var oldImg="";
		var paths_array=el.src.split("/");
		
		oldImg=paths_array[paths_array.length-1];
		
		extention_array=oldImg.split(".");
		extention=extention_array[extention_array.length-1];
		
		oldImg=extention_array[0];

		newImg = el.id.replace(/rollover__/g, "");
		newImg = newImg + "." + extention;
						
		for(var i=0;i<(paths_array.length-1);i++)
		{
			newPath=newPath + paths_array[i] + "/";
		}
						
		newImg=newPath + newImg;
		el.src=newImg;
		el.id="rollover__"+oldImg;					
	}
}

function preload(el)
{
	if(el){
		var newImg="";
		var newPath="";		
		var oldImg="";
		var paths_array=el.src.split("/");
		
		oldImg=paths_array[paths_array.length-1];
		
		extention_array=oldImg.split(".");
		extention=extention_array[extention_array.length-1];
		
		oldImg=extention_array[0];

		newImg = el.id.replace(/rollover__/g, "");
		newImg = newImg + "." + extention;
						
		for(var i=0;i<(paths_array.length-1);i++)
		{
			newPath=newPath + paths_array[i] + "/";
		}
		
		var img=new Image(el.width,el.height);
		img.src=newImg;
	}	
}