function valtxt(NK)
{
	var Emailformat =/[-a-zA-Z0-9_\.]+@[-a-zA-Z0-9]+\.[-a-zA-Z0-9\.]+/;
	var flg1 = NK.T2.value.match(Emailformat);

	if(NK.T1.value=="")
	{
		alert("Please enter your Name.");
		NK.T1.focus();
		return false;
	}

	if(NK.T2.value=="")
	{
		alert("Please enter your E-mail address.");
		NK.T2.focus();
		return false;
	}

	if(NK.T2.value !="")
	{
		if(flg1 != NK.T2.value)
		{
			alert("Enter a valid E-mail address please.");
			NK.T2.focus();
			return false;
		}
	}

	if(NK.T3.value=="")
	{
		alert("Please enter your Subject message.");
		NK.T3.focus();
		return false;
	}

	if(NK.T4.value=="")
	{
		alert("Please enter your Query message.");
		NK.T4.focus();
		return false;
	}
}