一個不錯的超鏈接的title效果

/* --- BoxOver ---
/* --- v 2.0 16th April 2006
By Oliver Bryant with help of Matthew Tagg
http://boxover.swazz.org */

if (typeof document.attachEvent!='undefined') {
   window.attachEvent('onload',init);
   document.attachEvent('onmousemove',moveMouse);
   document.attachEvent('onclick',checkMove); }
else {
   window.addEventListener('load',init,false);
   document.addEventListener('mousemove',moveMouse,false);
   document.addEventListener('click',checkMove,false);
}

var oDv=document.createElement("div");
var dvHdr=document.createElement("div");
var dvBdy=document.createElement("div");
var windowlock,boxMove,fixposx,fixposy,lockX,lockY,fixx,fixy,ox,oy,boxLeft,boxRight,boxTop,boxBottom,evt,mouseX,mouseY,boxOpen,totalScrollTop,totalScrollLeft;
boxOpen=false;
ox=10;
oy=10;
lockX=0;
lockY=0;

function init() {
    oDv.appendChild(dvHdr);
    oDv.appendChild(dvBdy);
    oDv.style.position="absolute";
    oDv.style.visibility='hidden';
    document.body.appendChild(oDv);    
}

function defHdrStyle() {
    dvHdr.innerHTML='<img  style="vertical-align:middle"  src="info.gif">&nbsp;&nbsp;'+dvHdr.innerHTML;
    dvHdr.style.fontFamily='verdana';
    dvHdr.style.border='1px solid #999999';
    dvHdr.style.padding='3';
    dvHdr.style.fontSize='11';
    dvHdr.style.color='#333333';
    dvHdr.style.background='#eeeeee';
    dvHdr.style.filter='alpha(opacity=75)'; // IE
    dvHdr.style.opacity='0.75'; // FF
}

function defBdyStyle() {
    
}

function checkElemBO(txt) {
if (!txt || typeof(txt) != 'string') return false;
if ((txt.indexOf('header')>-1)&&(txt.indexOf('body')>-1)&&(txt.indexOf('[')>-1)&&(txt.indexOf('[')>-1)) 
   return true;
else
   return false;
}

function scanBO(curNode) {
      if (checkElemBO(curNode.title)) {
         curNode.boHDR=getParam('header',curNode.title);
         curNode.boBDY=getParam('body',curNode.title);
            curNode.boCSSBDY=getParam('cssbody',curNode.title);            
            curNode.boCSSHDR=getParam('cssheader',curNode.title);
            curNode.IEbugfix=(getParam('hideselects',curNode.title)=='on')?true:false;
            curNode.fixX=parseInt(getParam('fixedrelx',curNode.title));
            curNode.fixY=parseInt(getParam('fixedrely',curNode.title));
            curNode.absX=parseInt(getParam('fixedabsx',curNode.title));
            curNode.absY=parseInt(getParam('fixedabsy',curNode.title));
            curNode.offY=(getParam('offsety',curNode.title)!='')?parseInt(getParam('offsety',curNode.title)):10;
            curNode.offX=(getParam('offsetx',curNode.title)!='')?parseInt(getParam('offsetx',curNode.title)):10;
            curNode.fade=(getParam('fade',curNode.title)=='on')?true:false;
            curNode.fadespeed=(getParam('fadespeed',curNode.title)!='')?getParam('fadespeed',curNode.title):0.04;
            curNode.delay=(getParam('delay',curNode.title)!='')?parseInt(getParam('delay',curNode.title)):0;
            if (getParam('requireclick',curNode.title)=='on') {
                curNode.requireclick=true;
                document.all?curNode.attachEvent('onclick',showHideBox):curNode.addEventListener('click',showHideBox,false);
                document.all?curNode.attachEvent('onmouseover',hideBox):curNode.addEventListener('mouseover',hideBox,false);
            }
            else {// Note : if requireclick is on the stop clicks are ignored               
               if (getParam('doubleclickstop',curNode.title)!='off') {
                   document.all?curNode.attachEvent('ondblclick',pauseBox):curNode.addEventListener('dblclick',pauseBox,false);
               }    
               if (getParam('singleclickstop',curNode.title)=='on') {
                   document.all?curNode.attachEvent('onclick',pauseBox):curNode.addEventListener('click',pauseBox,false);
               }
           }
            curNode.windowLock=getParam('windowlock',curNode.title).toLowerCase()=='off'?false:true;
            curNode.title='';
            curNode.hasbox=1;
       }
       else
          curNode.hasbox=2;   
}


function getParam(param,list) {
    var reg = new RegExp('([^a-zA-Z]' + param + '|^' + param + ')\\s*=\\s*\\[\\s*(((\\[\\[)|(\\]\\])|([^\\]\\[]))*)\\s*\\]');
    var res = reg.exec(list);
    var returnvar;
    if(res)
        return res[2].replace('[[','[').replace(']]',']');
    else
        return '';
}

function Left(elem){    
    var x=0;
    if (elem.calcLeft)
        return elem.calcLeft;
    var oElem=elem;
    while(elem){
         if ((elem.currentStyle)&& (!isNaN(parseInt(elem.currentStyle.borderLeftWidth)))&&(x!=0))
             x+=parseInt(elem.currentStyle.borderLeftWidth);
         x+=elem.offsetLeft;
         elem=elem.offsetParent;
      } 
    oElem.calcLeft=x;
    return x;
    }

function Top(elem){
     var x=0;
     if (elem.calcTop)
         return elem.calcTop;
     var oElem=elem;
     while(elem){        
          if ((elem.currentStyle)&& (!isNaN(parseInt(elem.currentStyle.borderTopWidth)))&&(x!=0))
             x+=parseInt(elem.currentStyle.borderTopWidth); 
         x+=elem.offsetTop;
             elem=elem.offsetParent;
      } 
      oElem.calcTop=x;
      return x;
      
}

var ah,ab;
function applyStyles() {
    if(ab)
        oDv.removeChild(dvBdy);
    if (ah)
        oDv.removeChild(dvHdr);
    dvHdr=document.createElement("div");
    dvBdy=document.createElement("div");
    CBE.boCSSBDY?dvBdy.className=CBE.boCSSBDY:defBdyStyle();
    CBE.boCSSHDR?dvHdr.className=CBE.boCSSHDR:defHdrStyle();
    dvHdr.innerHTML=CBE.boHDR;
    dvBdy.innerHTML=CBE.boBDY;
    ah=false;
    ab=false;
    if (CBE.boHDR!='') {        
        oDv.appendChild(dvHdr);
        ah=true;
    }    
    if (CBE.boBDY!=''){
        oDv.appendChild(dvBdy);
        ab=true;
    }    
}

var CSE,iterElem,LSE,CBE,LBE, totalScrollLeft, totalScrollTop, width, height ;
var ini=false;

// Customised function for inner window dimension
function SHW() {
   if (document.body && (document.body.clientWidth !=0)) {
      width=document.body.clientWidth;
      height=document.body.clientHeight;
   }
   if (document.documentElement && (document.documentElement.clientWidth!=0) && (document.body.clientWidth + 20 >= document.documentElement.clientWidth)) {
      width=document.documentElement.clientWidth;   
      height=document.documentElement.clientHeight;   
   }   
   return [width,height];
}


var ID=null;
function moveMouse(e) {
   //boxMove=true;
    e?evt=e:evt=event;
    
    CSE=evt.target?evt.target:evt.srcElement;
    
    if (!CSE.hasbox) {
       // Note we need to scan up DOM here, some elements like TR don't get triggered as srcElement
       iElem=CSE;
       while ((iElem.parentNode) && (!iElem.hasbox)) {
          scanBO(iElem);
          iElem=iElem.parentNode;
       }       
    }
    
    if ((CSE!=LSE)&&(!isChild(CSE,dvHdr))&&(!isChild(CSE,dvBdy))){        
       if (!CSE.boxItem) {
            iterElem=CSE;
            while ((iterElem.hasbox==2)&&(iterElem.parentNode))
                    iterElem=iterElem.parentNode; 
            CSE.boxItem=iterElem;
            }
        iterElem=CSE.boxItem;
        if (CSE.boxItem&&(CSE.boxItem.hasbox==1))  {
            LBE=CBE;
            CBE=iterElem;
            if (CBE!=LBE) {
                applyStyles();
                if (!CBE.requireclick)
                    if (CBE.fade) {
                        if (ID!=null)
                            clearTimeout(ID);
                        ID=setTimeout("fadeIn("+CBE.fadespeed+")",CBE.delay);
                    }
                    else {
                        if (ID!=null)
                            clearTimeout(ID);
                        COL=1;
                        ID=setTimeout("oDv.style.visibility='visible';ID=null;",CBE.delay);                        
                    }
                if (CBE.IEbugfix) {hideSelects();} 
                fixposx=!isNaN(CBE.fixX)?Left(CBE)+CBE.fixX:CBE.absX;
                fixposy=!isNaN(CBE.fixY)?Top(CBE)+CBE.fixY:CBE.absY;            
                lockX=0;
                lockY=0;
                boxMove=true;
                ox=CBE.offX?CBE.offX:10;
                oy=CBE.offY?CBE.offY:10;
            }
        }
        else if (!isChild(CSE,dvHdr) && !isChild(CSE,dvBdy) && (boxMove))    {
            // The conditional here fixes flickering between tables cells.
            if ((!isChild(CBE,CSE)) || (CSE.tagName!='TABLE')) {               
               CBE=null;
               fadeOut();
               showSelects();
            }
        }
        LSE=CSE;
    }
    else if (((isChild(CSE,dvHdr) || isChild(CSE,dvBdy))&&(boxMove))) {
        totalScrollLeft=0;
        totalScrollTop=0;
        
        iterElem=CSE;
        while(iterElem) {
            if(!isNaN(parseInt(iterElem.scrollTop)))
                totalScrollTop+=parseInt(iterElem.scrollTop);
            if(!isNaN(parseInt(iterElem.scrollLeft)))
                totalScrollLeft+=parseInt(iterElem.scrollLeft);
            iterElem=iterElem.parentNode;            
        }
        if (CBE!=null) {
            boxLeft=Left(CBE)-totalScrollLeft;
            boxRight=parseInt(Left(CBE)+CBE.offsetWidth)-totalScrollLeft;
            boxTop=Top(CBE)-totalScrollTop;
            boxBottom=parseInt(Top(CBE)+CBE.offsetHeight)-totalScrollTop;
            doCheck();
        }
    }
    
    if (boxMove&&CBE) {
        // This added to alleviate bug in IE6 w.r.t DOCTYPE
        bodyScrollTop=document.documentElement&&document.documentElement.scrollTop?document.documentElement.scrollTop:document.body.scrollTop;
        bodyScrollLet=document.documentElement&&document.documentElement.scrollLeft?document.documentElement.scrollLeft:document.body.scrollLeft;
        mouseX=evt.pageX?evt.pageX-bodyScrollLet:evt.clientX-document.body.clientLeft;
        mouseY=evt.pageY?evt.pageY-bodyScrollTop:evt.clientY-document.body.clientTop;
        if ((CBE)&&(CBE.windowLock)) {
            mouseY < -oy?lockY=-mouseY-oy:lockY=0;
            mouseX < -ox?lockX=-mouseX-ox:lockX=0;
            mouseY > (SHW()[1]-oDv.offsetHeight-oy)?lockY=-mouseY+SHW()[1]-oDv.offsetHeight-oy:lockY=lockY;
            mouseX > (SHW()[0]-dvBdy.offsetWidth-ox)?lockX=-mouseX-ox+SHW()[0]-dvBdy.offsetWidth:lockX=lockX;            
        }
        oDv.style.left=((fixposx)||(fixposx==0))?fixposx:bodyScrollLet+mouseX+ox+lockX+"px";
        oDv.style.top=((fixposy)||(fixposy==0))?fixposy:bodyScrollTop+mouseY+oy+lockY+"px";        
        
    }
}

function doCheck() {    
    if (   (mouseX < boxLeft)    ||     (mouseX >boxRight)     || (mouseY < boxTop) || (mouseY > boxBottom)) {
        if (!CBE.requireclick)
            fadeOut();
        if (CBE.IEbugfix) {showSelects();}
        CBE=null;
    }
}

function pauseBox(e) {
   e?evt=e:evt=event;
    boxMove=false;
    evt.cancelBubble=true;
}

function showHideBox(e) {
    oDv.style.visibility=(oDv.style.visibility!='visible')?'visible':'hidden';
}

function hideBox(e) {
    oDv.style.visibility='hidden';
}

var COL=0;
var stopfade=false;
function fadeIn(fs) {
        ID=null;
        COL=0;
        oDv.style.visibility='visible';
        fadeIn2(fs);
}

function fadeIn2(fs) {
        COL=COL+fs;
        COL=(COL>1)?1:COL;
        oDv.style.filter='alpha(opacity='+parseInt(100*COL)+')';
        oDv.style.opacity=COL;
        if (COL<1)
         setTimeout("fadeIn2("+fs+")",20);        
}


function fadeOut() {
    oDv.style.visibility='hidden';
    
}

function isChild(s,d) {
    while(s) {
        if (s==d) 
            return true;
        s=s.parentNode;
    }
    return false;
}

var cSrc;
function checkMove(e) {
    e?evt=e:evt=event;
    cSrc=evt.target?evt.target:evt.srcElement;
    if ((!boxMove)&&(!isChild(cSrc,oDv))) {
        fadeOut();
        if (CBE&&CBE.IEbugfix) {showSelects();}
        boxMove=true;
        CBE=null;
    }
}

function showSelects(){
   var elements = document.getElementsByTagName("select");
   for (i=0;i< elements.length;i++){
      elements[i].style.visibility='visible';
   }
}

function hideSelects(){
   var elements = document.getElementsByTagName("select");
   for (i=0;i< elements.length;i++){
   elements[i].style.visibility='hidden';
   }
}


/*

<SCRIPT src="over.js"></SCRIPT>

<a target="main" href="showproducts.asp?flowNo=528" onFocus="this.blur()">
                        <img src="admin/upProPic/s200773103225-Y-0702B  Q01013C.jpg" border="0" title="header=[Y-0702B Q01013C] body=[]" align="center" width="85" height="113"></a>
*/