function validateForm(myForm) {
    
    var Errors = "";
    //var myForm = document.forms[0];
        
    if (myForm.FirstName.value.length < 1)
        Errors += "First name is Required.\r\n";
    
    if (myForm.LastName.value.length < 1)
        Errors += "Last name is Required.\r\n";    

    if (myForm.Email.value.length < 1)
        Errors += "Email is Required.\r\n";
    else {    
        var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
        if(reg.test(myForm.Email.value) == false)
            Errors += "Please enter a valid Email Address.\r\n";
    }
    
    if (myForm.Comments.value.length < 1)
        Errors += "Comments are Required.\r\n";
      
    if (myForm.Phone != undefined) {
        if (myForm.Phone.value.length < 1)
            Errors += "Phone is required.\r\n";
    }
      
    if (Errors.length > 0) {
        alert(Errors);
        return false;
    } 
    
    return true;
       
}