window.
onload=function(){
var oDiv
=document.
getElementById(
"top");
oDiv.
onmouseover = function () {
if(window.event){
document.
onmousewheel = function () {
window.event.returnValue
="false";
return false;
}
}
else{
oDiv.
addEventListener(
"DOMMouseScroll",
function(
ev){
ev.
preventDefault();} ,
false);
}
};
oDiv.
onmouseout=function(){
document.onmousewheel
=null;
}
}
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