function xr_rx(){var ww=document.documentElement.clientWidth;
xr_dx=(ww-parseInt(xr_xr.style.width))/2;var i=-parseInt(xr_xr.style.width)/2;if(xr_dx<0){i-=xr_dx;xr_dx=0;};xr_xr.style.marginLeft=i+"px";document.body.style.backgroundPosition=xr_dx+"px 0px";};
function xr_nn() {return(true);};
window.onresize=xr_rx;


var xr_xr=document.getElementById("xr_xr")