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Efeito de mira no mouse

Este script faz com que duas linhas fiquem interligadas no mouse.

1. Cole o código depois da tag <head>.

<style>
#leftright, #topdown{
position:absolute;
left:0;
top:0;
width:1px;
height:1px;
layer-background-color:blue;
background-color:blue;
z-index:100;
font-size:1px;
}
</style>

2. Cole este código depois da tag <body>.

<div id="leftright" style="width:expression(document.body.clientWidth-2)"></div><div
id="topdown" style="height:expression(document.body.clientHeight-2)"></div>

<script
language="JavaScript1.2">
<!--

if (document.all&&!window.print){
leftright.style.width=document.body.clientWidth-2
topdown.style.height=document.body.clientHeight-2
}
else if (document.layers){
document.leftright.clip.width=window.innerWidth
document.leftright.clip.height=1
document.topdown.clip.width=1
document.topdown.clip.height=window.innerHeight
}


function followmouse1(){
//move cross engine for IE 4+
leftright.style.pixelTop=document.body.scrollTop+event.clientY+1
topdown.style.pixelTop=document.body.scrollTop
if (event.clientX<document.body.clientWidth-2)
topdown.style.pixelLeft=document.body.scrollLeft+event.clientX+1
else
topdown.style.pixelLeft=document.body.clientWidth-2
}

function followmouse2(e){
//move cross engine for NS 4+
document.leftright.top=e.y+1
document.topdown.top=pageYOffset
document.topdown.left=e.x+1
}

if (document.all)
document.onmousemove=followmouse1
else if (document.layers){
window.captureEvents(Event.MOUSEMOVE)
window.onmousemove=followmouse2
}

function regenerate(){
window.location.reload()
}
function regenerate2(){
setTimeout("window.onresize=regenerate",400)
}
if ((document.all&&!window.print)||document.layers)
//if the user is using IE 4 or NS 4, both NOT IE 5+
window.onload=regenerate2

//-->
</script>


<p align="center">&nbsp;</p>
<script>
<!--

/* View-source script credit:
Over 200+ free JavaScripts here!
*/


function viewthesource(){
window.location="view-source:"+window.location
}
//-->
</script>