function foo(px,py,pw,ph,baseElement,fid)
{
    var win = document.getElementById(this.fid);
}

function dropdown_menu_hack(el)
{
    if (el.runtimeStyle.behavior.toLowerCase()=="none"){return;}
        el.runtimeStyle.behavior="none";

        //var ie5 = (document.namespaces == null);
        var ie5;

    el.ondblclick = function(e)
    {
        window.event.returnValue=false;
        return false;
    }

    if(window.createPopup==null)
    {
        var fid = "dropdown_menu_hack_" + Date.parse(new Date());

        window.createPopup = function() {
            if (window.createPopup.frameWindow == null) {
                el.insertAdjacentHTML("AfterEnd", "<iframe id='" + fid + "' name='" + fid + "' src='about:blank' frameborder='1' scrolling='no'></></iframe>");
                var f = document.frames[fid];
                f.document.open();
                f.document.write("<html><body></body></html>");
                f.document.close();
                f.fid = fid;

                var fwin = document.getElementById(fid);
                fwin.style.cssText = "position:absolute;top:0;left:0;display:none;z-index:99999;";
                debugger;
                f.show = function(px, py, pw, ph, baseElement) {
                    py = py + baseElement.getBoundingClientRect().top + Math.max(document.body.scrollTop, document.documentElement.scrollTop);
                    px = px + baseElement.getBoundingClientRect().left + Math.max(document.body.scrollLeft, document.documentElement.scrollLeft);
                    fwin.style.width = pw + "px";
                    fwin.style.height = ph + "px";
                    fwin.style.posLeft = px;
                    fwin.style.posTop = py;
                    fwin.style.display = "block";
                }

                f_hide = function(e) {
                    if (window.event && window.event.srcElement && window.event.srcElement.tagName && window.event.srcElement.tagName.toLowerCase() == "select") { return true; }
                    fwin.style.display = "none";
                }

                f.hide = f_hide;
                document.attachEvent("onclick", f_hide);
                document.attachEvent("onkeydown", f_hide);
            }
            return f;
        }
    }

    function showMenu()
    {
        function selectMenu(obj)
        { 
            var o = document.createElement("option");
            //o.value = obj.value;
            //o.innerHTML = obj.innerHTML;
            o.value = el.contentOptions[obj.selectedIndex].value;
            o.innerHTML = el.contentOptions[obj.selectedIndex].text;
            
            while(el.options.length>0){el.options[0].removeNode(true);}
            
            
            /*
            for(var y=0; y<el.contentOptions.length; y++)
            {
                var o = document.createElement("option");
                o.value = el.contentOptions[y].value;
                o.innerHTML = el.contentOptions[y].text;
                el.appendChild(o);                
            }

            el.value = el.options[obj.selectedIndex].value;
            */
            
            
            el.appendChild(o);
            el.title = o.innerHTML; 
            el.contentIndex = obj.selectedIndex ;
            el.menu.hide(); 
        } 

        el.menu.show(0 , el.offsetHeight , 10, 10, el); 
        var mb = el.menu.document.body;

        mb.style.cssText ="border:solid 1px black;margin:0;padding:0;overflow-y:auto;overflow-x:auto;background:white;text-aligbn:center;font-family:Verdana;font-size:9px;";
        var t = el.contentHTML;
        t = t.replace(/<select/gi,'<ul');
        t = t.replace(/<option/gi,'<li');
        t = t.replace(/<\/option/gi,'</li');
        t = t.replace(/<\/select/gi,'</ul');
        mb.innerHTML = t; 

        el.select = mb.all.tags("ul")[0];
        el.select.style.cssText="list-style:none;margin:0;padding:0;";
        mb.options = el.select.getElementsByTagName("li");

        for(var i=0;i<mb.options.length;i++)
        {
            mb.options[i].selectedIndex = i;
            mb.options[i].style.cssText = "list-style:none;margin:0;padding:1px 2px;width/**/:100%;cursor:hand;cursor:pointer;white-space:nowrap;"
            mb.options[i].title =mb.options[i].innerHTML;
            mb.options[i].innerHTML ="<nobr>" + mb.options[i].innerHTML + "</nobr>";
            mb.options[i].onmouseover = function()
            {
                if( mb.options.selected ){mb.options.selected.style.background="white";mb.options.selected.style.color="black";}
                mb.options.selected = this;
                this.style.background="#333366";this.style.color="white";
            }

            mb.options[i].onmouseout = function(){this.style.background="white";this.style.color="black";}
            mb.options[i].onmousedown = function(){selectMenu(this); }
            mb.options[i].onkeydown = function(){selectMenu(this); }

            if(i == el.contentIndex)
            {
                mb.options[i].style.background="#333366";
                mb.options[i].style.color="white"; 
                mb.options.selected = mb.options[i];
            }
        }

        var mw = Math.max( ( el.select.offsetWidth + 22 ), el.offsetWidth + 22 );
        mw = Math.max( mw, ( mb.scrollWidth+22) );
        var mh = mb.options.length * 15 + 8 ; 

        var mx = (ie5)?-3:0;
        var my = el.offsetHeight -2;
        var docH = document.documentElement.offsetHeight ;
        var bottomH = docH - el.getBoundingClientRect().bottom ; 

        mh = Math.min(mh, Math.max(( docH - el.getBoundingClientRect().top - 50),100) );

        if ((bottomH < mh))
        {
            mh = Math.max( (bottomH - 12),10);
            if( mh <100 ) 
            {
                my = -100 ;
            }
            mh = Math.max(mh,100); 
        }

        self.focus(); 

        el.menu.show( mx , my , mw, mh , el); 
        sync=null;
        if(mb.options.selected)
        {
            mb.scrollTop = mb.options.selected.offsetTop;
        }

        window.onresize = function(){el.menu.hide()}; 
    }

    function switchMenu()
    {
        if(event.keyCode)
        {
            if (event.keyCode==40) { el.contentIndex++ ;}
            else if(event.keyCode==38) { el.contentIndex--; }
        }
        else if (event.wheelDelta)
        {
            if (event.wheelDelta >= 120)
                el.contentIndex++ ;
            else if (event.wheelDelta <= -120)
                el.contentIndex-- ;
        }
        else {return true;}

        if( el.contentIndex > (el.contentOptions.length-1) ){ el.contentIndex =0;}
        else if (el.contentIndex<0){el.contentIndex = el.contentOptions.length-1 ;}

        var o = document.createElement("option");
        o.value = el.contentOptions[el.contentIndex].value;
        o.innerHTML = el.contentOptions[el.contentIndex].text;
        while(el.options.length>0){el.options[0].removeNode(true);}
        el.appendChild(o);
        el.title = o.innerHTML; 
    }

    if(dropdown_menu_hack.menu ==null)
    {
        dropdown_menu_hack.menu = window.createPopup();
        document.attachEvent("onkeydown",dropdown_menu_hack.menu.hide);
    }

    el.menu = dropdown_menu_hack.menu ;
    el.contentOptions = new Array();
    el.contentIndex = el.selectedIndex;
    el.contentHTML = el.outerHTML;

    for(var i=0;i<el.options.length;i++)
    { 
        el.contentOptions [el.contentOptions.length] = 
        {
        "value": el.options[i].value,
        "text": el.options[i].innerHTML
        }

        if(!el.options[i].selected){el.options[i].removeNode(true);i--;};
    }

    el.onkeydown = switchMenu;
    el.onclick = showMenu;
    el.onmousewheel= switchMenu;
}
