function isEmail(s){
		s = trim(s); 
		var p = /^[_\.0-9a-z-]+@([0-9a-z][0-9a-z-]+\.){1,4}[a-z]{2,3}$/i; 
		return p.test(s);
	}
function trim(s)
{
	return ltrim(rtrim(s));
}

function ltrim(s)
{
	return s.replace(/^\s*/,"");
}

function rtrim(s)
{
	return s.replace(/\s*$/,"");
}
function checkthisform()
{
	var oOrderId = document.getElementById("OrderIDT");
	var oEmail = document.getElementById("EmailT");
	
	if(trim(oOrderId.value) == "")
	{
		alert("Please enter your order id");
		oOrderId.focus();
		return false;
	}
	
	if(!isEmail(oEmail.value))
	{
		alert("Please enter you valid email");
		oEmail.focus();	
		return false;
	}
}