$(document).ready(function(){
	$(".kaesten-rechts img").each(function(){
		if( $(this).attr("src") == "images/wissmess.jpg" )
		{
			$(this).css("cursor", "pointer");
			$(this).mouseover(function(){
				$(this).attr("src", "images/wissmess_active.jpg");
			});
			
			$(this).mouseout(function(){
				$(this).attr("src", "images/wissmess.jpg");
			});
			
			$(this).click(function(){
				window.open("http://www.wissmess.de", "Win");
			});
		}
	});
});