var ImageSwap = new Class({
	initialize: function(element, replaceImgSrc)
	{
		var filter = element.getStyle('filter');
		
		if (window.ie6 && filter != '')
		{
			var re = new RegExp('.*src=\'(.*)\'.*');
			element.setStyle('filter', filter.replace(re, 'progid:DXImageTransform.Microsoft.AlphaImageLoader(src=\'' + replaceImgSrc + '\');'));
		}
		else
		{
			element.setAttribute('src', replaceImgSrc);	
		}
	}
});

// ====== EXAMPLE =======
/*
window.addEvent('domready', function()
{
	new ImageSwap($('myimage'), 'newimage.png'); 
});
*/