/** check required fields **/
function reqFields(field,alerttxt){
	with (field){
		if(value==null||value==""){
			alert(alerttxt);
			return false;
		}else{
			return true;
		}
	}
}
function eVal(field) {
   var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
   with (field){
	   if(reg.test(value) == false) {
		  alert('Please enter a valid email address');
		  return false;
	   }else{
		   return true;
	   }
   }
}
/** check feedback form **/
function valFb(thisform){
	with(thisform){
		if(reqFields(fname, "Please enter your first name")==false) return false;
		if(reqFields(lname, "Please enter your last name")==false) return false;
		if(reqFields(email, "Please enter your email address")==false) return false;
		if(reqFields(agency, "Please enter your agency name")==false) return false;
		if(eVal(email)==false) return false;
	}
	return true;
}