// JavaScript Document
function getWindowData(){
    var widthViewport,heightViewport,xScroll,yScroll,widthTotal,heightTotal;
    if (typeof window.innerWidth != 'undefined'){
        widthViewport= window.innerWidth;
        heightViewport= window.innerHeight;
    }else if(typeof document.documentElement != 'undefined' && typeof document.documentElement.clientWidth !='undefined' && document.documentElement.clientWidth != 0){
        widthViewport=document.documentElement.clientWidth;
        heightViewport=document.documentElement.clientHeight;
    }else{
        widthViewport= document.getElementsByTagName('body')[0].clientWidth;
        heightViewport=document.getElementsByTagName('body')[0].clientHeight;
    }
    xScroll=self.pageXOffset || (document.documentElement.scrollLeft+document.body.scrollLeft);
    yScroll=self.pageYOffset || (document.documentElement.scrollTop+document.body.scrollTop);
    widthTotal=Math.max(document.documentElement.scrollWidth,document.body.scrollWidth,widthViewport);
    heightTotal=Math.max(document.documentElement.scrollHeight,document.body.scrollHeight,heightViewport);
    return [widthViewport,heightViewport,xScroll,yScroll,widthTotal,heightTotal];
}
function $(id){
return document.getElementById(id);
}
window.onload=window.onresize=window.onscroll=function(){
var data=getWindowData();
$('web').style.left=data[0]/2+data[2]-parseInt($('web').style.width)/2+'px';
$('web').style.top=data[1]/2+data[3]-parseInt($('web').style.height)/2+'px';
}