_window.getCurrentWindowId获取当前窗体ID

• 函数原型

/* 获取当前最前端窗体ID */
_window.getCurrentWindowId=function(){
		var zzIndex=0;
		var id=null;
		for(var winid in _window.windows){
			if( !_window.windows[winid].isHide && !_window.windows[winid].MIN ){
				if(_window.windows[winid].zIndex>zzIndex){
					id=winid;
					zzIndex=_window.windows[winid].zIndex;
				}
			}
		}
		return id;
}