function position(){
	var width = getWidth();
	var height = getHeight(); 
	var browser=navigator.appName;
	var b_version=navigator.appVersion;
	var version=parseFloat(b_version);
	
	var left = (width - 1000)/2;
	if(left < 0){
		left = 0;
	}
	document.write(
	'<style type="text/css">'+
	'#container{'+
		'position:absolute;'+
		'left: '+left+'px;'+
		'background-color: #ffffff;'+
	'}'+
	'</style>'
	);
	
}

function getWidth(){
	var x = 0;
	if (self.innerHeight){
	        x = self.innerWidth;
	}
	else if (document.documentElement && document.documentElement.clientHeight){
	        x = document.documentElement.clientWidth;
	}
	else if (document.body){
	        x = document.body.clientWidth;
	}
	
	return x;
}

function getHeight(){
	var y = 0;
	if (self.innerHeight){
	        y = self.innerHeight;
	}
	else if (document.documentElement && document.documentElement.clientHeight){
	        y = document.documentElement.clientHeight;
	}
	else if (document.body){
	        y = document.body.clientHeight;
	}
	return y;
}
position();