document.forms['request_form'].submit_btn.onclick = onCustomerRegister;

function onCustomerRegister() {

 var frmvalidator = new Validator("request_form");
 
 frmvalidator.addValidation("siteTitle","req","Please enter Site Title");
 frmvalidator.addValidation("description","req","Please enter Description");
 frmvalidator.addValidation("siteURL","req","Please enter Site URL");
 frmvalidator.addValidation("name","req","Please enter your name");
 frmvalidator.addValidation("email","req","Please enter your email");
 frmvalidator.addValidation("email","email","Please enter valid email");
}