//***********分类图层菜单渐显*********************
tPopWait=50; //图层弹出响应时间
tPopShow=10000; //图层弹出停留时间
showPopStep=20;
popOpacity=99; 

//***************参数定义*****************
sPop=null;
curShow=null;
tFadeOut=null;
tFadeIn=null;
tFadeWaiting=null;

document.write("<style type='text/css'id='defaultPopStyle'>");
document.write(".cPopText {  background-color: #F8F8F5;color:#000000; border: 1px #000000 solid;font-color: font-size: 12px; padding-right: 4px; padding-left: 4px; height: 20px; padding-top: 2px; padding-bottom: 2px; filter: Alpha(Opacity=0)}");
document.write("</style>");
document.write("<div id='dypopLayer' style='position:absolute;z-index:1000;' class='cPopText'></div>");


function showPopupText(){
var o=event.srcElement;
    MouseX=event.x;
    MouseY=event.y;
    if(o.alt!=null && o.alt!=""){o.dypop=o.alt;o.alt=""};
        if(o.title!=null && o.title!=""){o.dypop=o.title;o.title=""};
    if(o.dypop!=sPop) {
            sPop=o.dypop;
            clearTimeout(curShow);
            clearTimeout(tFadeOut);
            clearTimeout(tFadeIn);
            clearTimeout(tFadeWaiting);
            if(sPop==null || sPop=="") {
                dypopLayer.innerHTML="";
                dypopLayer.style.filter="Alpha()";
                dypopLayer.filters.Alpha.opacity=0;
                }
            else {
                if(o.dyclass!=null) popStyle=o.dyclass
                    else popStyle="cPopText";
                curShow=setTimeout("showIt()",tPopWait);
            }

    }
}

function showIt(){
        dypopLayer.className=popStyle;
        dypopLayer.innerHTML=sPop;
        popWidth=dypopLayer.clientWidth;
        popHeight=dypopLayer.clientHeight;
        if(MouseX+12+popWidth>document.body.clientWidth) popLeftAdjust=-popWidth-24
            else popLeftAdjust=0;
        if(MouseY+12+popHeight>document.body.clientHeight) popTopAdjust=-popHeight-24
            else popTopAdjust=0;
        dypopLayer.style.left=MouseX+12+document.body.scrollLeft+popLeftAdjust;
        dypopLayer.style.top=MouseY+12+document.body.scrollTop+popTopAdjust;
        dypopLayer.style.filter="Alpha(Opacity=0)";
        fadeOut();
}

function fadeOut(){
    if(dypopLayer.filters.Alpha.opacity<popOpacity) {
        dypopLayer.filters.Alpha.opacity+=showPopStep;
        tFadeOut=setTimeout("fadeOut()",1);
        }
        else {
            dypopLayer.filters.Alpha.opacity=popOpacity;
            tFadeWaiting=setTimeout("fadeIn()",tPopShow);
            }
}

function fadeIn(){
    if(dypopLayer.filters.Alpha.opacity>0) {
        dypopLayer.filters.Alpha.opacity-=1;
        tFadeIn=setTimeout("fadeIn()",1);
        }
}
document.onmouseover=showPopupText;

function makeRectangularDropShadow(el, color, size)
{
    var i;
    for (i=size; i>0; i--)
    {
        var rect = document.createElement('div');
        var rs = rect.style
        rs.position = 'absolute';
        rs.left = (el.style.posLeft + i) + 'px';
        rs.top = (el.style.posTop + i) + 'px';
        rs.width = el.offsetWidth + 'px';
        rs.height = el.offsetHeight + 'px';
        rs.zIndex = el.style.zIndex - i;
        rs.backgroundColor = color;
        var opacity = 1 - i / (i + 1);
        rs.filter = 'alpha(opacity=' + (100 * opacity) + ')';
        el.insertAdjacentElement('afterEnd', rect);
        global.fo_shadows[global.fo_shadows.length] = rect;
    }
}