var ImgCache = new Array();
var ImgCacheCount = 0;

function preloadImage(img_src)
{
	ImgCache[ImgCacheCount] = new Image();
	ImgCache[ImgCacheCount].src = img_src;
	ImgCacheCount++;
}

function preloadImages()
{
	preloadImage('/images/section_link_off.png');
	preloadImage('/images/section_link_on.png');
}

function setBgImage(obj_id, img_src)
{
	var obj = document.getElementById(obj_id);
	if (obj)
	{
		obj.style.backgroundImage = "url('/images/" + img_src + ".png')";
	}
}

preloadImages();