function addPrice(){
		var curPrice = 0;
		var price = 0;
		$("input.price").each(function(){
			var ck = this.checked;
			if(ck){
				price = this.value;
				price = parseFloat(price);
				curPrice = curPrice+price;
				changeCourseName(this);
			}
		});
		$("input#total").val(curPrice);
		$("input#totalshow").val(curPrice);
		$("span#totalPayment").html(curPrice);
	}
	function changeCourseName(input){
		var num = input.id.split("course");
		$("input#courseName"+num[1]).val(input.title);
	}
	function checkCourse(formName){
		var total = $("input#total").val();
		if(total==0){
			alert('Please select a course');
			return false;
		}else{
			document.forms[formName].submit();
		}
	}