// JavaScript Document
function swapImage(imageName,context)
{
	var el = document.getElementById(imageName);
	if (el != null)
	{
		var src = el.getAttribute('src');
		var fileName = src.substring(0,src.lastIndexOf('.'));
		var fileExtension = src.substring(src.lastIndexOf('.'),src.length);
		if (context == "over")
		{		
			fileName = fileName + "_mouseover";			
		}
		else if (context == "out")
		{
			fileName = fileName.substring(0,fileName.lastIndexOf('_'));
		}	
		src = fileName + fileExtension;
		el.setAttribute('src',src);
	}
}