jQuery(document).ready(function(){
	function extractID(div){
		var string_array = div.split("_");
		return string_array[2];
	}

	function hoverOn(divid){
		jQuery("#overlay_bg_" + divid).animate( { height: "160px", marginTop: "-160px"}, { duration: 100 } );
		jQuery("#overlay_bottom_" + divid).animate( { opacity: "1", height: "40px"}, { duration: 50 } );
	}

	function hoverOut(divid){
		jQuery("#overlay_bg_" + divid).animate( { marginTop: "-30", height: "30"}, { duration: 100 } );
		jQuery("#overlay_bottom_" + divid).animate( { opacity: "0"}, { duration: 50 } );
	}

	jQuery(".container_overlay").hover(
		function(){	hoverOn(extractID(this.id)); }, function(){hoverOut(extractID(this.id));
	})
});