function iqPreloadImage(id, url)
{
	var i = document.getElementById(id);
	if (i != null && i.src)
	{
		var img = new Image;
		img.src = url;
		i.oSrc = i.src;
		i.sSrc = url;
	}
}

function iqSwapImgRestore(id)
{
	var i = document.getElementById(id);
	if (i != null) i.src = i.oSrc;
}

function iqSwapImg(id)
{
	var i = document.getElementById(id);
	if (i != null) { i.src = i.sSrc; }
}