function CheckForm()
{
var captcha=document.getElementById('form').captcha.value;
var vcaptcha=document.getElementById('form').vcaptcha.value;
 
if(captcha == "") {
alert('Please answer the anti-bot question.'); return false; }
else if(hex_md5(captcha)!=vcaptcha) {
alert('Your answer to the anti-bot question is not correct.'); return false; }
return true;
}