$(document).ready(function()
{
	var total = 0;
	function calcTotal()
		{
			$("input:checked").each(function()
			{
				var value = $(this).attr("rel");
				total += parseInt(value); 
			});
		}
	calcTotal();	
	$("input:checkbox").click(function()
		{
			total = 0;
			calcTotal();
			$("#Total_Price").val(total); 
		});
});