<!---New Add For Track 2008-7-21 李军--->
function $(id)
{
	return document.getElementById(id);
}
function ChangeImg(id)
{
	if($(id).src=="/images/sure.jpg")
	{
		$(id).src="/images/sure.gif";
	}
	else
	{
		$(id).src="/images/sure.gif";
	}
}
<!---end--->
	function showdiv(obj)
	{		
		if(obj.value==1)
		{
			document.getElementById("divtrack").style.display="";
			document.getElementById("divpowl").style.display="none";
		}
		else
		{
			document.getElementById("divtrack").style.display="none";
			document.getElementById("divpowl").style.display="";
		}
	}




function rs_Email(emailStr)
{ 
	var re=/^[\w-]+(\.*[\w-]+)*@([0-9a-z]+(([0-9a-z]*)|([0-9a-z-]*[0-9a-z]))+\.)+[a-z]{2,3}$/i;
	if(re.test(emailStr))
	{
		return true;
	}
	else
	{
		return false;
	}
}
function Tcheck()
	{
		if(document.getElementById("OrderIDT").value == ""){
			alert('Please enter your Order ID');
			return false;
			}
		else if(document.getElementById("OrderIDT").value.search(/[^0-9]/)!=-1)
		{
			alert('Please enter your valid Order ID');
			return false;
		}
		else if(document.getElementById("EmailT").value == ""){
			alert('Please enter your email address!');
			return false;
			}
		else if(!rs_Email(document.getElementById("EmailT").value))
		{
			alert('Please enter your valid email address!');
			return false;
		}		 		
		else
		{
			return true;
		}
			
	}
function Pcheck()
	{
		
		if(document.getElementById("OrderIDP").value == ""){
		alert('Please enter your Order ID');
		return false;
		}
		else if(document.getElementById("EmailP").value == ""){
		alert('Please enter your email address!');
		return false;
		}
		else if(document.getElementById("orderidP").value.search(/[^0-9]/)!=-1)
		{
			alert('Please enter your valid Order ID');
			return false;
		}
		else if(!rs_Email(document.getElementById("EmailP").value))
		{
			alert('Please enter your valid email address!');
			return false;
		}
		else
		{
			return true;
		}
	}

function showTrack(obj)
{
	if(obj.value==1)
	{
		document.getElementById("divtrack").style.display="";
		document.getElementById("divpowl").style.display="none";
	}
	else
	{
		document.getElementById("divtrack").style.display="none";
		document.getElementById("divpowl").style.display="";
	}
}