function isValid() {

	var ex_err="no";

 	// check for name entered
	var val1=document.step1.tel.value;
	if (val1==""){
	 	ex_err="yes";
	 	alert ('Please enter your telephone number');
	}


 if (ex_err=="no")
 //alert('You have not entered an account number')
  return true;
 else return false;
 // alert ('Please select a profession')
//return false;
}