var displayBlock;
var dWidth = screen.width;
var dHeight = screen.height;
var sSize;
var sWidth;
var sHeight;
var ratio = (dWidth / dHeight).toPrecision(5);
var dRatio = Math.sqrt((dWidth*dWidth)+(dHeight*dHeight));

switch (ratio*1)
{
case 1.3333:
  ratio = "4:3";
  break
case 1.6000:
  ratio = "16:10";
  break
case 1.2500:
  ratio = "5:4";
  break
case 1.6666:
  ratio = "5:3";
  break
case 1.7067:
  ratio = "10:6";
  break
case 1.5625:
case 1.5555:
  ratio = "14:9";
  break
case 1.7786:
case 1.7777:
  ratio = "16:9";
  break
case 1.5000:
case 1.4988:
  ratio = "3:2";
  break
}

document.write('ViewGuard&#8482 has detected that your display has a <b>'+ratio+' Aspect Ratio</b>. Click <a href=display-calculator.php>here</a> to find out more.');