// JavaScript Document
function nullValidation() { 
    var x = document.getElementById("contact"); 
  
    for (var i = 0; i < x.length; i++) { 
        if(x.elements[i].value == "" && x.elements[i].title) { 
            alert("Please enter or select " + x.elements[i].title + "."); 
            x.elements[i].focus(); 
            return false; 
        } 
    } 
  
    return true; 
}