// This script was supplied free by Hypergurl 
// http://www.hypergurl.com 

<!-- // JavaScript to interpolate random images into a page.

// Number of alternative images 
var choice = 4; 

// Array to hold filenames
var headPic = new Array(choice); 
headPic[0] = 'http://www.hydrogenforums.org/08Renewables/images/headImage_forest.jpg';
headPic[1] = 'http://www.hydrogenforums.org/08Renewables/images/headImage_meadow.jpg';
headPic[2] = 'http://www.hydrogenforums.org/08Renewables/images/headImage_sun.jpg'; 
headPic[3] = 'http://www.hydrogenforums.org/08Renewables/images/headImage_ocean.jpg'; 

// Randomize function
function pickRandom(range) 
	{
	if (Math.random) return Math.round(Math.random() * (range-1)); 
	else 
		{
			var now = new Date();
			return (now.getTime() / 1000) % range;
		}
	} 

// Write out an IMG tag, using a randomly-chosen image name. 
var headerChoice = pickRandom(choice); 

// -->