var start1 = 0;
	var start2 = 0;

	function animation(div1, div2){
		
		start1 += 1;
		start2 += 3;
		
		if (!$.browser.msie){
			$('#'+ div1).fadeIn(5000);
			$('#'+ div2).fadeIn(5000);
		}
		else {
			$('#'+ div1).show();
			$('#'+ div2).show();
		}
		
		$('#'+ div1).css("background-position", start1+"px 0");
		$('#'+ div2).css("background-position", start2+"px 0");
		
	}
	
	  setInterval("animation('clouds1','clouds2')", 100);