height: 100%; z-index: 400;">
  	   <canvas id="main-canvas" width="800" height="500">Your browser does not support CTAT. Please update or use another browser.</canvas>

	   <div id="given1numer" class="CTATTextInput" style="position: absolute; left: 40px; top: 10px; z-index: 18; width: 30px; height: 30px;"></div>
	   <div id="given1denom" class="CTATTextInput" style="position: absolute; left: 40px; top: 50px; z-index: 18; width: 30px; height: 30px;"></div>
	   <div id="given2numer" class="CTATTextInput" st