script.js Example File

 .pragma library

 function getWidth(string) {
     return (string.match(/width=\"([0-9]+)\"/))[1]
 }

 function getHeight(string) {
     return (string.match(/height=\"([0-9]+)\"/))[1]
 }

 function getImagePath(string) {
     var pattern = /src=\"http:\/\/(\S+)\"/
     return (string.match(pattern))[1]
 }

 function calculateScale(width, height, cellSize) {
     var widthScale = (cellSize * 1.0) / width
     var heightScale = (cellSize * 1.0) / height
     var scale = 0

     if (widthScale <= heightScale) {
         scale = widthScale;
     } else if (heightScale < widthScale) {
         scale = heightScale;
     }
     return scale;
 }