// verhindern, dass im IE alt-tags als tooltips angezeigt werden
// quelle: http://dotjay.co.uk/2007/apr/removing-alt-tooltips-in-ie-with-javascript

var objFixIeTooltip = {
	// methods
	init : function() {
		// detect support
		if (!document.getElementById || !document.getElementsByTagName) return;
		// detect IE - leave out if using conditional comments
		var isIE = navigator.userAgent.indexOf("MSIE");
		if (isIE < 1) return;
		// find the image(s) - tweak to your needs
		var elContainer=document.getElementById("content");
		if (!elContainer) return;
		var elImg=elContainer.getElementsByTagName("img")[0];
		if (!elImg) return;
		// if there isn't already a title attribute set on the image, set the title attribute to blank, thus overriding the alt tooltip behaviour
		// use == '' because IE always thinks title is a string (cannot distinguish between undefined and empty attributes)
		if (elImg.getAttribute('title') == '') elImg.setAttribute('title','');
	}
};
addLoadEvent(objFixIeTooltip.init);