function imagePreloadArray(image_url)
{
	if (document.images)
	{
	  preload_image_object = new Image();
	   var i = 0;
	   for(i=0; i<image_url.length; i++) 
	     preload_image_object.src = image_url[i];
	}
}

function imagePreload(image_url)
{
	if (document.images)
	{
	  preload_image_object = new Image();
	  preload_image_object.src = image_url;
	}
}