// JavaScript Document

//Email control, and textfield content controlers
    function remName(a, b){
    if(a.value==b){
    a.value='';
    }else if(a.value==''){
    a.value=b;
    }else{
    a.value=a.value;
    }
    }
     
    function chkName(a, b){
    if(a.value==''){
    a.value=b;
    }else{
    a.value=a.value;
    }
    }
    
    function checkEmail() {
    var email = document.getElementById('email');
    var filter = /^([a-zA-Z0-9_.-])+@(([a-zA-Z0-9-])+.)+([a-zA-Z0-9]{2,4})+$/;
    if (!filter.test(email.value)) {
    alert('Please provide a valid email address');
    email.focus
    return false;
    }
    }