1、将以下代码加入到heml的<head></head>之间：
<style type=text/css>
#floater {
position: absolute;
left: 500;
top: 146;
width: 125;
visibility: visible;
z-index: 10;
}</style>
====2、将以下代码加入到heml的<body></body>之间
<div id=floater style=left: 590px; top: 158px>
<p align=center><img src=想要显示的图片.gif alt=图片显示的文字 width=125 height=60><br>
<font color=#ff8040>图片下面的文字</font></p>
</div><script language=javascript>
self.onerror=null;
currentx = currenty = 0;
whichit = null;
lastscrollx = 0; lastscrolly = 0;
ns = (document.layers) ? 1 : 0;
ie = (document.all) ? 1: 0;
<!-- stalker code -->
function heartbeat() {
if(ie) { diffy = document.body.scrolltop; diffx = document.body.scrollleft; }
if(ns) { diffy = self.pageyoffset; diffx = self.pagexoffset; }
if(diffy != lastscrolly) {
percent = .1 * (diffy - lastscrolly);
if(percent > 0) percent = math.ceil(percent);
else percent = math.floor(percent);
if(ie) document.all.floater.style.pixeltop += percent;
if(ns) document.floater.top += percent;
lastscrolly = lastscrolly + percent;
}
if(diffx != lastscrollx) {
percent = .1 * (diffx - lastscrollx);
if(percent > 0) percent = math.ceil(percent);
else percent = math.floor(percent);
if(ie) document.all.floater.style.pixelleft += percent;
if(ns) document.floater.left += percent;
lastscrollx = lastscrollx + percent;
}
}
<!-- /stalker code -->
<!-- drag drop code -->
function checkfocus(x,y) {
stalkerx = document.floater.pagex;
stalkery = document.floater.pagey;
stalkerwidth = document.floater.clip.width;
stalkerheight = document.floater.clip.height;
if( (x > stalkerx && x < (stalkerx+stalkerwidth)) && (y > stalkery && y < (stalkery+stalkerheight))) return true;
else return false;
}
function grabit(e) {
if(ie) {
whichit = event.srcelement;
while (whichit.id.indexof(floater) == -1) {
whichit = whichit.parentelement;
if (whichit == null) { return true; }
}
whichit.style.pixelleft = whichit.offsetleft;
whichit.style.pixeltop = whichit.offsettop;
currentx = (event.clientx + document.body.scrollleft);
currenty = (event.clienty + document.body.scrolltop);
} else {
window.captureevents(event.mousemove);
if(checkfocus (e.pagex,e.pagey)) {
whichit = document.floater;
stalkertouchedx = e.pagex-document.floater.pagex;
stalkertouchedy = e.pagey-document.floater.pagey;
}
}
return true;
}
function moveit(e) {
if (whichit == null) { return false; }
if(ie) {
newx = (event.clientx + document.body.scrollleft);
newy = (event.clienty + document.body.scrolltop);
distancex = (newx - currentx); distancey = (newy - currenty);
currentx = newx; currenty = newy;
whichit.style.pixelleft += distancex;
whichit.style.pixeltop += distancey;
if(whichit.style.pixeltop < document.body.scrolltop) whichit.style.pixeltop = document.body.scrolltop;
if(whichit.style.pixelleft < document.body.scrollleft) whichit.style.pixelleft = document.body.scrollleft;
if(whichit.style.pixelleft > document.body.offsetwidth - document.body.scrollleft - whichit.style.pixelwidth - 20) whichit.style.pixelleft = document.body.offsetwidth - whichit.style.pixelwidth - 20;
if(whichit.style.pixeltop > document.body.offsetheight + document.body.scrolltop - whichit.style.pixelheight - 5) whichit.style.pixeltop = document.body.offsetheight + document.body.scrolltop - whichit.style.pixelheight - 5;
event.returnvalue = false;
} else {
whichit.moveto(e.pagex-stalkertouchedx,e.pagey-stalkertouchedy);
if(whichit.left < 0+self.pagexoffset) whichit.left = 0+self.pagexoffset;
if(whichit.top < 0+self.pageyoffset) whichit.top = 0+self.pageyoffset;
if( (whichit.left + whichit.clip.width) >= (window.innerwidth+self.pagexoffset-17)) whichit.left = ((window.innerwidth+self.pagexoffset)-whichit.clip.width)-17;
if( (whichit.top + whichit.clip.height) >= (window.innerheight+self.pageyoffset-17)) whichit.top = ((window.innerheight+self.pageyoffset)-whichit.clip.height)-17;
return false;
}
return false;
}
function dropit() {
whichit = null;
if(ns) window.releaseevents (event.mousemove);
return true;
}
<!-- drag drop code -->
if(ns) {
window.captureevents(event.mouseup|event.mousedown);
window.onmousedown = grabit;
window.onmousemove = moveit;
window.onmouseup = dropit;
}
if(ie) {
document.onmousedown = grabit;
document.onmousemove = moveit;
document.onmouseup = dropit;
}
if(ns || ie) action = window.setinterval(heartbeat(),1);
</script>