$(document).ready(function() {
						   
	$("ul.charity-list li").hover(
	  function () {
	  	var img = $(this).find('img');
		var imgLocation = img.attr('src').split('-')[0];
	  	var colourImgSrc = imgLocation + '-colour.jpg';
		
		img.attr('src', colourImgSrc);
	},
	  function () {
	  	var img = $(this).find('img');
		var imgLocation = img.attr('src').split('-')[0];
	  	var greyImgSrc = imgLocation + '-grey.jpg';
		
		img.attr('src', greyImgSrc);
	  }
	);
	
});