程序代碼
<script type="text/javascript" language="javascript" >
????????document.οncοntextmenu=click;
????????var appState = new applicationState();
????????function applicationState() {
????????????this.contextMenu = null;
????????}
????????function click()
????????{
????????????var str="";
????????????????str="<div style='position: absolute;background-color:#48b4fc;'><table border='1'>";
????????????????str+="<tr οnmοuseοver='fn_set(this);'><td>111<td><tr>";
????????????????str+="<tr οnmοuseοver='fn_set(this);'><td>222<td><tr>";
????????????????str+="<tr οnmοuseοver='fn_set(this);'><td>333<td><tr>";
????????????????str+="<tr οnmοuseοver='fn_set(this);'><td>444<td><tr>";
????????????????str+="</table></div>";
????????????if(appState.contextMenu != null) appState.contextMenu.removeNode(true)

????????????document.body.insertAdjacentHTML("beforeEnd", str)
????????????contextMenu = document.body.childNodes(document.body.childNodes.length-1)
????????????contextMenu.style.left = window.event.x
????????????contextMenu.style.top = window.event.y;
????????????appState.contextMenu = contextMenu
????????????window.event.cancelBubble = true;
????????????return false;
????????}
????????function fn_set(obj){
????????????obj.style.color="#24b400";
????????}
????????function clean() {
??????????var contextMenu
??????????if(appState.contextMenu != null) {
????????????contextMenu = appState.contextMenu.removeNode(true)
????????????contextMenu = null
??????????}
????????}
????????</script>
????????<script event=onclick() for="document" type="text/javascript">clean();</script>//處理頁面單擊事件，關閉下拉表

轉載于:https://www.cnblogs.com/Bany/archive/2007/02/25/1755511.html

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