上下滚动文字

<script language="JavaScript">    
//这里配置滚动字幕的属性    
var scrollerwidth=290    
var scrollerheight=25    
var scrollerbgcolor='ffffff'    
//set below to '' if you don't wish to use a background image    
var scrollerbackground='scrollerback.gif'    
//修改下面的文字及文字所指向的链接    
var messages=new Array()    
messages[0]="<font face='Arial'><a href='http://www.hh-tech.com'>1111111111111111</a></font>"    
messages[1]="<font face='Arial'><a href='http://www.hh-tech.com'>2222222222222222</a></font>"    
messages[2]="<font face='Arial'><a href='http://www.hh-tech.com'>3333333333333333</a></font>"    
messages[3]="<font face='Arial'><a href='http://www.hh-tech.com'>9999999999999999</a></font>"    
///////不要修改下面的内容///////////////////////    
if (messages.length>1)    
i=2    
else    
i=0    
function move1(whichlayer){    
tlayer=eval(whichlayer)    
if (tlayer.top>0&&tlayer.top<=5){    
tlayer.top=0    
setTimeout("move1(tlayer)",3000)    
setTimeout("move2(document.main.document.second)",3000)    
return    
}    
if (tlayer.top>=tlayer.document.height*-1){    
tlayer.top-=5    
setTimeout("move1(tlayer)",100)    
}    
else{    
tlayer.top=scrollerheight    
tlayer.document.write(messages[i])    
tlayer.document.close()    
if (i==messages.length-1)    
i=0    
else    
i++    
}    
}    
function move2(whichlayer){    
tlayer2=eval(whichlayer)    
if (tlayer2.top>0&&tlayer2.top<=5){    
tlayer2.top=0    
setTimeout("move2(tlayer2)",3000)    
setTimeout("move1(document.main.document.first)",3000)    
return    
}    
if (tlayer2.top>=tlayer2.document.height*-1){    
tlayer2.top-=5    
setTimeout("move2(tlayer2)",100)    
}    
else{    
tlayer2.top=scrollerheight    
tlayer2.document.write(messages[i])    
tlayer2.document.close()    
if (i==messages.length-1)    
i=0    
else    
i++    
}    
}    
function move3(whichdiv){    
tdiv=eval(whichdiv)    
if (tdiv.style.pixelTop>0&&tdiv.style.pixelTop<=5){    
tdiv.style.pixelTop=0    
setTimeout("move3(tdiv)",3000)    
setTimeout("move4(second2)",3000)    
return    
}    
if (tdiv.style.pixelTop>=tdiv.offsetHeight*-1){    
tdiv.style.pixelTop-=5    
setTimeout("move3(tdiv)",100)    
}    
else{    
tdiv.style.pixelTop=scrollerheight    
tdiv.innerHTML=messages[i]    
if (i==messages.length-1)    
i=0    
else    
i++    
}    
}    
function move4(whichdiv){    
tdiv2=eval(whichdiv)    
if (tdiv2.style.pixelTop>0&&tdiv2.style.pixelTop<=5){    
tdiv2.style.pixelTop=0    
setTimeout("move4(tdiv2)",3000)    
setTimeout("move3(first2)",3000)    
return    
}    
if (tdiv2.style.pixelTop>=tdiv2.offsetHeight*-1){    
tdiv2.style.pixelTop-=5    
setTimeout("move4(second2)",100)    
}    
else{    
tdiv2.style.pixelTop=scrollerheight    
tdiv2.innerHTML=messages[i]    
if (i==messages.length-1)    
i=0    
else    
i++    
}    
}    
function startscroll(){    
if (document.all){    
move3(first2)    
second2.style.top=scrollerheight    
second2.style.visibility='visible'    
}    
else if (document.layers){    
document.main.visibility='show'    
move1(document.main.document.first)    
document.main.document.second.top=scrollerheight+5    
document.main.document.second.visibility='show'    
}    
}    
window.onload=startscroll    
</script>    
     
  
<ilayer id="main" width=&{scrollerwidth}; height=&{scrollerheight}; bgColor=&{scrollerbgcolor}; background=&{scrollerbackground}; visibility=hide>    
<layer id="first" left=0 top=1 width=&{scrollerwidth};>    
<script language="JavaScript1.2">if (document.layers)document.write(messages[0])</script>    
</layer>    
<layer id="second" left=0 top=0 width=&{scrollerwidth}; visibility=hide>    
<script language="JavaScript1.2">if (document.layers)document.write(messages[1])</script>    
</layer>    
</ilayer>    
  
<script language="JavaScript1.2">    
if (document.all){    
document.writeln('<span id="main2" style="position:relative;width:'+scrollerwidth+';height:'+scrollerheight+';overflow:hiden;background-color:'+scrollerbgcolor+' ;background-image:url('+scrollerbackground+')">')    
document.writeln('<div style="position:absolute;width:'+scrollerwidth+';height:'+scrollerheight+';clip:rect(0 '+scrollerwidth+' '+scrollerheight+' 0);left:0;top:0">')    
document.writeln('<div id="first2" style="position:absolute;width:'+scrollerwidth+';left:0;top:1;">')    
document.write(messages[0])    
document.writeln('</div>')    
document.writeln('<div id="second2" style="position:absolute;width:'+scrollerwidth+';left:0;top:0;visibility:hidden">')    
document.write(messages[1])    
document.writeln('</div>')    
document.writeln('</div>')    
document.writeln('</span>')    
}    
</script>