function disableState(){
    //var asterisk = document.getElementById('state_asterisk');
    var ddlCountry = document.getElementById('ddlCountry');
    var ddlState = document.getElementById('ddlState');
    var USIndex = 0;

    for (i=0; i < ddlCountry.options.length; i++) {
        if (ddlCountry.options[i].value == 'United States') {
            USIndex = i;
        }
    }

    if(ddlCountry.selectedIndex != USIndex){
        ddlState.disabled = true;
        //asterisk.style.color = "#ffffff";
        //asterisk.style.display = "none";
    } else {
        ddlState.disabled = false;
        //asterisk.style.color = "#ff0000";
        //asterisk.style.display = "inline";
    }
}
function validateForm(form) {
    var msg = "";

    if(form.txtName.value == "") {
       msg = "Please enter your 'Name'.\n";
       form.txtName.focus( );
    }
    if(form.txtEmail.value == "") {
       msg += "Please enter your 'Email Address'.\n";
       form.txtEmail.focus( );
    }
    if(form.ddlCountry.value == "") {
       msg += "Please select your 'Country'.\n";
       form.ddlCountry.focus( );
    }
    else if(form.ddlCountry.value == "United States") { 
       if (form.ddlState.value == "") {
           msg += "Please select your 'State'.\n";
           form.ddlState.focus( );
       }
    }
    
    if(msg != "") {
        alert(msg);
        return false;
    }
}