function alertmsg(item, msg)
{
	$("p",$(item).parent()).remove();
	$(item).parent().append('<p style=color:#ff0000;>'+msg+'</p>');
	$("p",$(item).parent()).addClass("alertmsg");
	$(item).keypress(function(){
		if(this.value != "") {
			$("p",$(item).parent()).remove();
			$(this).unbind("keypress");
		}
	});
}
function checkIsNull(item)
{
	if(item.value == "") {
		return true;
	}
}




function checkFormm(item)
{
	var error = false;
	
	if(item.Email.value == "") {
		alertmsg(item.Email, "Please enter your Email address！");
		error = true;
	} else {
	reg=/^([a-zA-Z0-9]+[_|\-|\.]?)*[a-zA-Z0-9]+@([a-zA-Z0-9]+[_|\-|\.]?)*[a-zA-Z0-9]+\.[a-zA-Z]{2,3}$/gi;
	if (!reg.test(item.Email.value))
	{
		alertmsg(item.Email, "Wrong information, please re-enter.");
		error = true;
	}
	}

			
	return !error;
}