//***********默认设置定义.*********************
tPopWait=500;//停留tWait毫秒后显示提示。
tPopShow=3000;//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)";
                fadeOut();
}

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

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