ASP。NET时写的防止重复提交的脚本。

function _doPostBack(){};
if(typeof("__doPostBack")=="function")
{
    _doPostBack=__doPostBack;
    __doPostBack=_doPostBackNew;
}

document.attachEvent("onmousemove",_onmousemove);
var _isPosting=false;
var _divMask=null;

function _onmousemove()
{
    if(_divMask)
    with(_divMask.runtimeStyle)
    {
        left=event.clientX+document.body.scrollLeft-4;
        top=event.clientY+document.body.scrollTop-4;
    }
}


function _makeMask()
{
    var div=document.createElement("DIV");
    with(div.runtimeStyle)
    {
        position="absolute";
        zIndex=999999;
        fontSize="1px";
        left=event.clientX+document.body.scrollLeft-4;
        top=event.clientY+document.body.scrollTop-4;
        width="8px";
        height="8px";
        cursor="wait";
        
        backgroundColor="gray";
        filter="alpha(opacity=10)";
    }
    try
    {
        document.body.insertAdjacentElement("BeforeEnd",div);
        div.onblur=new Function("this.focus()");
        div.focus();
    }
    catch(x){}
    
    if(_divMask)_divMask.removeNode(true);
    _divMask=div;
}

function _doPostBackNew(sender,args)
{
    if(_isPosting)
        return event.returnValue=!(event.cancelBubble=true);

    status="正在更新页面";
    _doPostBack(sender,args);        
    _isPosting=true;
    _makeMask();
}

function _onformsubmit()
{
    if(_isPosting)
        return event.returnValue=!(event.cancelBubble=true);

    _isPosting=true;
    _makeMask();
}
new function _attachForms()
{
    with(new Enumerator(document.forms))
    for(;!atEnd();moveNext())
    {
        item().attachEvent("onsubmit",_onformsubmit);
        var div=document.createElement("div");
        div.runtimeStyle.width="0px";
        div.runtimeStyle.hight="0px";
        div.runtimeStyle.overflow="hidden";
        div.runtimeStyle.position="absolute";
        item(0).insertAdjacentElement("afterbegin",div);
        div.innerHTML="<INPUT TYPE=Submit name='webformpatchsubmitelement' onclick='return event.returnValue=false' id='webformpatchsubmitelement' value='webformpatchsubmitelement'/>";
    }
}

把这个作为 <-script src=.....js-><-/script-> 的形式Render到每个页面中就可以了。|
如果有PageBase，则在Init的时候用RegisterClientScriptBlock放上去更好。
因为客户没有抱怨过，所以也没有改进过。