js 滑鼠移動顯示圖片的簡單實例_javascript技巧

//***********默认设置定义.*********************  
tPopWait=50;//停留tWait豪秒后显示提示。  
tPopShow=5000;//显示tShow豪秒后关闭提示  
showPopStep=20; 
popOpacity=99; 

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

document.write(""); 
document.write(""); 

 
function showPopupText(){ 
var o=event.srcElement; 
    MouseX=event.x; (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) { 
         curShow);
           clearTimeout(tFadeOut); 
           clearTimeout(tFadeIn);       
            if(sPop==null || sPop=="") { 
           "; 
                dypopLayer.style.filter="Alpha()"; 
    p.                } 
           else {                    else popStyle="cPopText";              } 

    } 
} 

function showIt(){ 
        dypopLayer.className=popStyle; 
        dypopLayer.innerHTML=sPop; 
        popWidth=dypopLayer.clientWidth; 
        popHeight=dypopLayer.clientHeight; 
        if(MouseX 12 popWidth>document.body.clientWidth) popLeftAdjust=-popWidth-24 
   =Le  
        if(MouseY 12 popHeight>document.body.clientHeight) popTopAdjust=-popHeight-24 
         

        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 p  
        tFadeOut=setTimeout("fadeOut()",1); 
        } 
        else { 
           
            tFadeWaiting=setTimeout("fadeIn()",tPopShow); 
            } 
} 

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


二、html程式碼包含js程式碼即可，使用範例

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