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# rgba.js Example File
script/context2d/scripts/rgba.js

     var ctx = document.getElementById('tutorial').getContext('2d');

       // Draw background
       ctx.fillStyle = 'rgb(255,221,0)';
       ctx.fillRect(0,0,150,37.5);
       ctx.fillStyle = 'rgb(102,204,0)';
       ctx.fillRect(0,37.5,150,37.5);
       ctx.fillStyle = 'rgb(0,153,255)';
       ctx.fillRect(0,75,150,37.5);
       ctx.fillStyle = 'rgb(255,51,0)';
       ctx.fillRect(0,112.5,150,37.5);

       // Draw semi transparent rectangles
       for (i=0;i<10;i++){
         ctx.fillStyle = 'rgba(255,255,255,'+(i+1)/10+')';
         for (j=0;j<4;j++){
           ctx.fillRect(5+i*14,5+j*37.5,14,27.5)
         }
       }