function Valid()
{
if (document.forms[0].prd.value == "")
	{
		alert("Please select a product from the list first");
		return false;
	}
	if (document.forms[0].name.value == "")
	{
		alert("Please enter name");
		document.forms[0].name.focus();
		return false;
	}
	if (document.forms[0].compname.value == "")
	{
		alert("Please enter company name");
		document.forms[0].compname.focus();
		return false;
	}
	if (document.forms[0].email.value == "")
	{
		alert("Please enter email");
		document.forms[0].email.focus();
		return false;
	}
	else
	{
		if(isEmail(document.forms[0].email) == false) 
		{	
			alert("Invalid E-Mail address.\nPlease enter a valid E-Mail address\n(eg:username@xyz.com)\n");

			document.forms[0].email.focus();
			return false;						
		}
	}
	document.forms[0].submit();
}

// this function checks for a valid email in the email field
	function isEmail(field) 
	{
		if ((field.value.indexOf('@', 0) == -1) || field.value.indexOf('.') == -1) 
		{
			return false;
		}
		else 
		{
			return true;
		}
	}