function MM_jumpMenu(targ,selObj,restore){ //v3.0
  if(selObj.options[selObj.selectedIndex].value==0){
	return;  
  }
  eval(targ+".open('"+selObj.options[selObj.selectedIndex].value+"')");
  if (restore) selObj.selectedIndex=0;
}
function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}
function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function setHomePage() {
    document.body.style.behavior = 'url(#default#homepage)';
    document.body.setHomePage('http://www.baidu.com/');
    return false;
}



//menu






function menuFix() {
    var sfEls = document.getElementById("nav").getElementsByTagName("li");
    for (var i = 0; i < sfEls.length; i++) {
        sfEls[i].onmouseover = function () {
            this.className += (this.className.length > 0 ? " " : "") + "sfhover";
        }
        sfEls[i].onMouseDown = function () {
            this.className += (this.className.length > 0 ? " " : "") + "sfhover";
        }
        sfEls[i].onMouseUp = function () {
            this.className += (this.className.length > 0 ? " " : "") + "sfhover";
        }
        sfEls[i].onmouseout = function () {
            this.className = this.className.replace(new RegExp("( ?|^)sfhover\\b"),

"");
        }
    }
}
window.onload = menuFix;



$(document).ready(function () {

    $('li.mainlevel').mousemove(function () {
        $(this).find('ul').slideDown(0); //you can give it a speed
    });
    $('li.mainlevel').mouseleave(function () {
        $(this).find('ul').slideUp(0);
    });

});