function form_val()
{
	var emailfilter=/^\w+[\+\.\w-]*@([\w-]+\.)*\w+[\w-]*\.([a-z]{2,4}|\d+)$/i;
	var phoneRE = /^\d\d\d\-\d\d\d-\d\d\d\d$/;
	var status = true;
	var errmsg="";
	if(document.contact_form.firstname.value == '' || document.contact_form.email.value == '' || document.contact_form.phonenumber.value == '')
		{
			errmsg=errmsg+('Please fill out all necessary fields.\n');
			status = false;
		}
	if (!document.contact_form.email.value == '')
		{
			var returnval=emailfilter.test(document.contact_form.email.value);
			if (returnval==false)
				{
					errmsg=errmsg+("Please enter a valid email address.\n");
					status=false;
				}
		}
	if (!document.contact_form.phonenumber.value == '')
		{
			var phoneval=phoneRE.test(document.contact_form.phonenumber.value);
			if (phoneval==false)
				{
					errmsg=errmsg+("Phone Number should be of the format XXX-XXX-XXXX.\n");
					status=false;
				}
		}
	if(errmsg.length!="")
		{
			alert(errmsg);
		}
	return status;
}