function phonemask(t){
	var patt1 = /(\d{3}).*(\d{3}).*(\d{4})/;
	var patt2 = /^\((\d{3})\).(\d{3})-(\d{4})$/;
	var str = t.value;
	var result;
	if (!str.match(patt2))
	{
	result = str.match(patt1);
		if (result!= null){
			t.value = t.value.replace(/[^\d]/gi,'');
			str = '(' + result[1] + ') ' + result[2] + '-' + result[3];
			t.value = str;
		}else{
			if (t.value.match(/[^\d]/gi))
		t.value = t.value.replace(/[^\d]/gi,'');
			}
		}
}

function chkvalid()
{
	if(document.contactform.tName.value == "")
	{
		alert("Please Enter Name");
		document.contactform.tName.focus();
		return false;
	}
	
	if(document.contactform.tEmail.value == "")
	{
		alert("Please Enter Email Address");
		document.contactform.tEmail.focus();
		return false;
	}
	if(document.contactform.tEmail.value != "")
	  {
		 var theurl=document.contactform.tEmail.value;
		 var tomatch= /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
		 if (tomatch.test(theurl))
		 {
			//alert("email OK.");
			//return true;
		 }
		 else
		 {
		 	 
			 window.alert("Email Address invalid. Try again.");
			 document.contactform.tEmail.value="";
			 document.contactform.tEmail.focus();
			 return false; 
		 }
	 }
	 if(document.contactform.Phone.value != "")
	  {
		var re10digit= /(\d{3}).*(\d{3}).*(\d{4})/;
		if (!re10digit.test(document.contactform.Phone.value))
		{
			alert("Please enter a valid 10 digit Home Phone");
			document.contactform.Phone.focus();
			document.contactform.Phone.value="";
			return false;
		}
	 }
}