var win = null;
function OpenImage(url,w,h,txt)
{
var scroll = 0;
w = w +20;
h = h +20;
//if (txt == ' '){h = h - 80;}
var LeftPosition = (screen.width) ? (screen.width-w)/2 : 0;
var TopPosition = (screen.height) ? (screen.height-h)/2 : 0;
if(screen.height > h || screen.width > w) { scroll = 1; }
settings = 'height='+h+',width='+w+',top='+TopPosition+',left='+LeftPosition+',scrollbars='+scroll+',location=no,status=no';
win = window.open('','Image',settings);
if(win.window.focus){win.window.focus();}
var doc = win.document;
if (txt == ' ')
{
doc.write("![](" + url + ")
");
}else
{
doc.write("" + txt + "
");
}
doc.close();
}