var subWin = new Array();

var w = 480;
var h = 450;

var x = (screen.width - w) / 2;
var y = (screen.height - h) / 2;

function openwindow(n,m,o){
	subWin[n] = window.open(n + '/' + m + '/' + o + '.html',n,'resizable=1,scrollbars=no,status=0,width=480,height=450,screenX='+x+',screenY='+y+',left='+x+',top='+y);
	subWin[n].focus();
}