function contactvalidation()
{
if (document.contact.username.value == '')
{
alert('Please enter a user name');
document.contact.username.focus;
return false;
}

if(document.contact.companyname.value == '')
{
alert('Please enter a Company Name');
document.contact.companyname.focus;
return false;
}
/*
if (document.contact.userphonenumber.value ==  '')
{
alert('Please enter a Phone ');
document.contact.userphonenumber.focus;
return false;
}*/

e = document.contact.userEmail;
if (e.value == '')
{
	alert('Please enter email address');
	e.focus;
	return false;
}
		var emailfilter=/^\w+[\+\.\w-]*@([\w-]+\.)*\w+[\w-]*\.([a-z]{2,4}|\d+)$/i
		var returnval=emailfilter.test(e.value)
if (returnval==false)
{
		alert("Please enter a valid email address.")
		e.select()
		return false;
}
if (document.contact.userComments.value == '')
{
	alert('Please enter Comments ');
	document.contact.userComments.focus;
	return false;
}

return true;
}