$(window).load(function() {
	$.fn.smartBackgroundImage = function(url){
	var t = this;
	//create an img so the browser will download the image:
	$('<img />')
	.attr('src', url)
	.load(function(){
	t.each(function(){
	var vert=Math.floor(Math.random()*33);
	var horiz=Math.floor(Math.random()*44);
	var myVert=100-vert;
	$(this).css('background', 'url('+url+') no-repeat' );
	$(this).css('background-position', + horiz +'%' + myVert + '%');
	});
	});
	return this;
	}
	$('#commentcall').smartBackgroundImage('/gfx/coffee/rotator.php');
	});