function nullcheck()
{
	if(document.contactusfrm.name.value=="")
	{
		alert("Please Enter Name");
		document.contactusfrm.name.focus();
		return false;
	}
	
	if(document.contactusfrm.email.value=="")
	{
		alert("Please Enter Email");
		document.contactusfrm.email.focus();
		return false;
	}
	if(document.contactusfrm.email.value!="")
	{
		if(document.contactusfrm.email.value.search(/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/) == -1)
		{
				alert("Invalid Email Address");
				document.contactusfrm.email.focus();
				return false;
		}
	}
	
	if(document.contactusfrm.comments.value=="")
	{
		alert("Please Enter Comments");
		document.contactusfrm.comments.focus();
		return false;
	}
return true;
}