function SetMenuCSS(ctrlID,cssName) {
    var oli = document.getElementById(ctrlID);
    oli.className = cssName;
}

function SubmitKeyClick(button) {
    if (event.keyCode == 13) {
        event.keyCode = 9;
        event.returnValue = false;
        document.all[button].click();
    }
}
function SetPosition(ID) {
         document.getElementById(ID).style.left = (window.screen.availWidth / 2) - (document.getElementById(ID).offsetWidth / 2) + 'px';
         document.getElementById(ID).style.top = (window.screen.availHeight / 2 - 100) - (document.getElementById(ID).offsetHeight / 2) + document.documentElement.scrollTop + 'px';
     }

     function openDiv(divName) {
         document.getElementById('mask').style.display = "block";
         document.getElementById('mask').style.width = window.screen.availWidth + 'px';
         document.getElementById(divName).style.display = "block";
         SetPosition(divName);
     }

       function closeDiv(divName) {
         document.getElementById(divName).style.display = "none";
         document.getElementById('mask').style.display = "none";
     }