function tox(w){
x = (screen.width - w) / 2;
return(x);
}
function toy(h){
y = (screen.height - h) / 2;
return(y);
}
function w(url, name, w, h){
var prop = "width=" + w+", height=" + h +", left=" + tox(w) +",top=" + toy(h) + ", resizable=1,toolbar=0,directories=0,location=0,menubar=0,status=0";
if(url.indexOf(".jpg") > -1 || url.indexOf(".png") > -1){
var win = window.open('', name, prop+",scrollbars=0");
var con = "" + name + "";
con += "";
con += "";
con += "![]("+url+")
";
con += "";
win.document.write(con);
win.document.close();
}else{
var win = window.open(url, name, prop+",scrollbars=1");
}
win.focus();
}