function CHorPos(){}
CHorPos.prototype.go=function(){ 
	this.body			= document.getElementsByTagName("body")[0];
	this.site			= document.getElementById('site');
	this.MarginLeft		= (this.body.offsetWidth-this.site.offsetWidth)/2;
	this.site.style.marginLeft= "0px";
	if(this.MarginLeft<0)	this.site.style.left= "0px";
	else					this.site.style.left= this.MarginLeft+"px";
}
horpos=new CHorPos();
function HorPos_go(){horpos.go();}
window.addEventListener?window.addEventListener('load',HorPos_go,false):window.attachEvent('onload',HorPos_go);
window.addEventListener?window.addEventListener('resize',HorPos_go,false):window.attachEvent('onresize',HorPos_go);