// Validate Script.

function validate() {
    var validated = true;
    
    if (isEmpty(document.getElementById("firstname").value)) {
        document.getElementById("errfirstname").style.visibility = "visible";
        validated = false;
    } else {
        document.getElementById("errfirstname").style.visibility = "hidden";
    }

    if (isEmpty(document.getElementById("lastname").value)) {
        document.getElementById("errlastname").style.visibility = "visible";
        validated = false;
    } else {
        document.getElementById("errlastname").style.visibility = "hidden";
    }

    if (isEmpty(document.getElementById("email").value)) {
        document.getElementById("erremail").style.visibility = "visible";
        validated = false;
    } else {
        document.getElementById("erremail").style.visibility = "hidden";
    }

 if (isEmpty(document.getElementById("location").value)) {
        document.getElementById("errlocation").style.visibility = "visible";
        validated = false;
    } else {
        document.getElementById("errlocation").style.visibility = "hidden";
    }

    
    


        }



function isEmpty(s) {
    return ((s == null) || (s.length == 0));
}