function form_submit() { 
	username=document.getElementById('username');
	if (username.value=="") { 
		username.focus();
		alert("Type in your Name.");
		return false;
	}

	useremail=document.getElementById('useremail');
	if (useremail.value=="") { 
		useremail.focus();
		alert("Type in your E-mail address.");
		return false;
	}
	else { 
		var regex_email=/\b[a-zA-Z0-9._%-]+@[a-zA-Z0-9._%-]+\.[a-zA-Z]{2,4}\b/;
		if (!regex_email.test(useremail.value)) {
			useremail.focus();
			alert("Invalid E-mail Address.")
			return false;
		}
	}

	userbiz=document.getElementById('userbiz');
	if (userbiz.value=="") { 
		userbiz.focus();
		alert("Type in the Name of your Company.");
		return false;
	}

	useraddr=document.getElementById('useraddr');
	if (useraddr.value=="") { 
		useraddr.focus();
		alert("Type in the Mailing Address.");
		return false;
	}

	usercity=document.getElementById('usercity');
	if (usercity.value=="") { 
		usercity.focus();
		alert("Type in the Name of the City.");
		return false;
	}

	userregion=document.getElementById('userregion');
	if (userregion.value=="") { 
		userregion.focus();
		alert("Type in the Name of the State.");
		return false;
	}

	userzip=document.getElementById('userzip');
	if (userzip.value=="") { 
		userzip.focus();
		alert("Type in the Zip / Postal Code.");
		return false;
	}

	userphone=document.getElementById('userphone');
	if (userphone.value=="") { 
		userphone.focus();
		alert("Type in the Telephone #.");
		return false;
	}

	userquantity=document.getElementById('userquantity');
	if (userquantity.value=="") { 
		userquantity.focus();
		alert("Type in the Quantity.");
		return false;
	}

}