// JavaScript Document

var w = 640/3, h = 480/3, cw = w/2, ch = h/2;

if (window.screen) {
    w = 600 //Math.floor(screen.availWidth/3);
    h = Math.floor(screen.availHeight/2);
    cw = Math.floor((screen.availWidth-w)/2);
    ch = Math.floor((screen.availHeight-h)/2);
}

function directions(url){
	window.open (url, 'directions', 'width='+w+',height='+h+',top='+ch+',left='+cw+',scrollbars=yes');
}