function swap( obj, newImg )
{
	obj.style.backgroundImage = "url(" + newImg + ")";
}

function MM_preloadImages() { //v3.0
	var d=document;

	if(d.images) {
		if(!d.MM_p)
			d.MM_p=new Array();

		var i,j=d.MM_p.length,a=MM_preloadImages.arguments;

		for(i=0; i<a.length; i++)
			if (a[i].indexOf("content.html")!=0) {
				d.MM_p[j]=new Image;
				d.MM_p[j++].src=a[i];
			}
	}
}