DIV层位置问题

[andrew064]

代码如下:

鼠标停在靠近地址栏下面的那些位置, Layer的顶部内容看不到, 请教应该修改哪个让它根据Layer的高度不同自动显示鼠标下面,
if(MouseY+12+popHeight>document.body.clientHeight) popTopAdjust=-popHeight-24
这个代码现在是可以当鼠标Y坐标+layer高度超过body.clientHeight, 它会自动显示在鼠标坐标+12 上面.


Java code//***********默认设置定义.*********************
tPopWait=1;//停留tWait毫秒后显示提示。
tPopShow=1500;//显示tShow毫秒后关闭提示
showPopStep=99;
popOpacity=90;

//***************内部变量定义*****************
sPop=null;
curShow=null;
tFadeOut=null;
tFadeIn=null;
tFadeWaiting=null;

document.write("<style type='text/css'id='defaultPopStyle'>");
document.write(".cPopText { background-color: #FFFFFF; border: 1px #cccccc solid; 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='zzzpopLayer' 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.zzzpop=o.alt;o.alt=""};
if(o.title!=null && o.title!=""){o.zzzpop=o.title;o.title=""};
if(o.zzzpop!=sPop) {
sPop=o.zzzpop;
clearTimeout(curShow);
clearTimeout(tFadeOut);
clearTimeout(tFadeIn);
clearTimeout(tFadeWaiting);
if(sPop==null || sPop=="") {
zzzpopLayer.innerHTML="";
zzzpopLayer.style.filter="Alpha()";
zzzpopLayer.filters.Alpha.opacity=0;
}
else {
if(o.dyclass!=null) popStyle=o.dyclass
else popStyle="cPopText";
curShow=setTimeout("showIt()",tPopWait);
}

}
}

function showIt(){
zzzpopLayer.className=popStyle;
zzzpopLayer.innerHTML=sPop;
popWidth=zzzpopLayer.clientWidth;
popHeight=zzzpopLayer.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;
zzzpopLayer.style.left=MouseX+12+document.body.scrollLeft+popLeftAdjust;
zzzpopLayer.style.top=MouseY+12+document.body.scrollTop+popTopAdjust;
zzzpopLayer.style.filter="Alpha(Opacity=0)";
}

document.onmouseover=showPopupText;