//<![CDATA[
function hide() {document.getElementById("atrapa").style.display = "none";}

function light(){

var winWidth = screen.width;
var winHeight = screen.height;

var IE = document.all ? true : false;
if (!IE) document.captureEvents(Event.MOUSEMOVE);

document.onmousemove = myMouseXY;

var pX = 0;
var pY = 0;

function myMouseXY(e) {
if (IE) {
 pX = event.clientX + document.body.scrollLeft;
 pY = event.clientY + document.body.scrollTop;
} else {
 pX = e.pageX;
 pY = e.pageY;
}

if (pX < 0) pX = 0;
if (pY < 0) pY = 0;

document.getElementById("mask_top").style.left = pX - 480;
document.getElementById("mask_top").style.top = pY - 480;
document.getElementById("mask_top").style.height = 470;
document.getElementById("mask_top").style.width = 960;

document.getElementById("mask_left").style.left = pX - 480;
document.getElementById("mask_left").style.top = pY - 10;
document.getElementById("mask_left").style.height = 20;
document.getElementById("mask_left").style.width = 470;

document.getElementById("mask_right").style.left = pX + 10;
document.getElementById("mask_right").style.top = pY - 10;
document.getElementById("mask_right").style.height = 20;
document.getElementById("mask_right").style.width = 470;

document.getElementById("mask_bottom").style.left = pX - 480;
document.getElementById("mask_bottom").style.top = pY + 10;
document.getElementById("mask_bottom").style.height = 470;
document.getElementById("mask_bottom").style.width = 960;

document.getElementById("mask_bg_left").style.left = pX - 480 - winWidth;
document.getElementById("mask_bg_left").style.top = pY - 1.5*winHeight;
document.getElementById("mask_bg_left").style.height = 3*winHeight;
document.getElementById("mask_bg_left").style.width = winWidth;

document.getElementById("mask_bg_right").style.left = pX + 480;
document.getElementById("mask_bg_right").style.top = pY - 1.5*winHeight;
document.getElementById("mask_bg_right").style.height = 3*winHeight;
document.getElementById("mask_bg_right").style.width = winWidth;

document.getElementById("mask_bg_top").style.left = pX - 480;
document.getElementById("mask_bg_top").style.top = pY - 480 - winHeight;
document.getElementById("mask_bg_top").style.height = winHeight;
document.getElementById("mask_bg_top").style.width = 960;

document.getElementById("mask_bg_bottom").style.left = pX - 480;
document.getElementById("mask_bg_bottom").style.top = pY + 480;
document.getElementById("mask_bg_bottom").style.height = winHeight;
document.getElementById("mask_bg_bottom").style.width = 960;

return true;
}
}
//]]>