function getEvent(){
if(document.all){
return window.event;
}
func = getEvent.caller;
while(func != null){
var arg0 = func.arguments[0];
if(arg0){
if((arg0.constructor == Event || arg0.constructor == MouseEvent) || typeof (arg0) == "object" && arg0.prevebtDefault() && arg0.stopPropagation()){
return arg0;
}
}
func = func.caller;
}
return null;
}