function validcontact(){
a = document.frm3;
if(a.txtname.value==""){
alert("Please enter your Name");
a.txtname.focus();
a.txtname.select();
return false;
}
if(a.textnumber.value==""){
alert("Please enter your Telephone Number");
a.textnumber.focus();
a.textnumber.select();
return false;
}
if(a.textemail.value==""){
alert("Please enter your Email");
a.textemail.focus();
a.textemail.select();
return false;
}
else
{
	var emailfilter=/^\w+[\+\.\w-]*@([\w-]+\.)*\w+[\w-]*\.([a-z]{2,4}|\d+)$/i
	var returnval=emailfilter.test(document.frm3.textemail.value)
	if (returnval==false){
		alert("Please enter a valid email address.")
		document.frm3.textemail.select()
		return false;
}
}
if(a.textcomm.value==""){
alert("Please enter your Comments");
a.textcomm.focus();
a.textcomm.select();
return false;
}
return;
}