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页面底部链接说明菜单

演示效果：

代码提示：将下面的代码复制到〈BODY〉与〈/BODY〉中

//SET TOOLTIP DESCRIPTIONS BELOW
//Extend or contract array as needed
var description=new Array()
description[0]='这是说明内容1'
description[1]='<b>这是说明内容2'
description[2]='<i>这是说明内容3'

//Do not edit below here

iens6=document.all||document.getElementById
ns4=document.layers

var thename
var theobj
var thetext
var winHeight
var winPositionFromTop
var winWidth
var startH=2
var openTimer

function setObj(text,theswitch,inwidth,inheight) {
	thetext=text
	if(iens6){
		thename = "viewer"
		theobj=document.getElementById? document.getElementById(thename):document.all.thename
		winHeight=100
			if(iens6&&document.all) {
				winPositionFromTop=document.body.clientHeight
				winWidth=(document.body.clientWidth-document.body.leftMargin)
			}
			if(iens6&&!document.all) {
				winPositionFromTop=window.innerHeight
				winWidth=(window.innerWidth-(document.body.offsetLeft+30))
			}
			if(theswitch=="override") {
				winWidth=inwidth
				winHeight=inheight
			}
		theobj.style.width=winWidth
		theobj.style.height=startH
			if(iens6&&document.all) {
				theobj.style.top=document.body.scrollTop+winPositionFromTop
				theobj.innerHTML = ""
				theobj.insertAdjacentHTML("BeforeEnd","<table cellspacing=0 width="+winWidth+" height="+winHeight+" border=1><tr><td width=100% valign=top><font type='times' size='2' style='color:black;font-weight:normal'>"+thetext+"</font></td></tr></table>")
			}
			if(iens6&&!document.all) {
				theobj.style.top=window.pageYOffset+winPositionFromTop
				theobj.innerHTML = ""
				theobj.innerHTML="<table cellspacing=0 width="+winWidth+" height="+winHeight+" border=1><tr><td width=100% valign=top><font type='times' size='2' style='color:black;font-weight:normal'>"+thetext+"</font></td></tr></table>"
			}
	}
	if(ns4){
		thename = "nsviewer"
		theobj = eval("document."+thename)
		winPositionFromTop=window.innerHeight
		winWidth=window.innerWidth
		winHeight=100
			if(theswitch=="override") {
				winWidth=inwidth
				winHeight=inheight
			}
		theobj.moveTo(0,eval(window.pageYOffset+winPositionFromTop))
		theobj.width=winWidth
		theobj.clip.width=winWidth
		theobj.document.write("<table cellspacing=0 width="+winWidth+" height="+winHeight+" border=1><tr><td width=100% valign=top><font type='times' size='2' style='color:black;font-weight:normal'>"+thetext+"</font></td></tr></table>")
		theobj.document.close()
	}
	viewIt()
}

function viewIt() {
	if(startH<=winHeight) {
		if(iens6) {
			theobj.style.visibility="visible"
				if(iens6&&document.all) {
					theobj.style.top=(document.body.scrollTop+winPositionFromTop)-startH
				}
				if(iens6&&!document.all) {
					theobj.style.top=(window.pageYOffset+winPositionFromTop)-startH
				}
			theobj.style.height=startH
			startH+=2
			openTimer=setTimeout("viewIt()",10)
		}
		if(ns4) {
			theobj.visibility = "visible"
			theobj.moveTo(0,(eval(window.pageYOffset+winPositionFromTop)-startH))
			theobj.height=startH
			theobj.clip.height=(startH)
			startH+=2
			openTimer=setTimeout("viewIt()",10)
		}
	}else{
		clearTimeout(openTimer)
	}
}

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