Resize fonts on a webpage to make things visible from a distance.

resize.js

// Mark things you want to resize with class="resizeable" 
// The ratio between their sizes will be maintained.
// works with jquery-1.4.2.min.js
//
//    <script src=".../jquery-1.4.2.min.js"></script> 
//    <script src=".../resize.js"></script> 
//


      function resizeNodes(nodes, startsizes, multiplier){
		var newsizes = startsizes.map(function(item, index){return item * multiplier;});
        nodes.each(function(index){$(this).css('font-size',newsizes[index]);});
      }; 

      function resize() {
      	  var multiplier = 1.0;
      	  var nodes = $(".resizeable");
      	  var startsizes = nodes.map(function(){return parseFloat($(this).css('font-size'),10);}).get();

	      while ($(document).height()<=($(window).height()))
	      {
	      	multiplier += 0.5;
	      	resizeNodes(nodes, startsizes, multiplier);
	      };
	      while ($(window).height()<$(document).height()&& multiplier > 0.5)
	      {
	      	multiplier -= 0.01;
	      	resizeNodes(nodes, startsizes, multiplier);
	      };
	      while ($(window).width()<$(document).width() && multiplier > 0.5)
	      {
	      	multiplier -= 0.05;
	      	resizeNodes(nodes, startsizes, multiplier);
	      };
	  };
  
  $(document).ready(resize);