//benutzt für die Sprachwahl
function changeImg(imgId,imgName) {
		newSrc = 'bilder/' + imgName + '.gif'; 
		document.getElementById(imgId).src = newSrc; 
}

var activeTopic = "home";
var hoveredTopic = "";

function highlightImg(topicName) {
	var imgSrc = document.images[topicName].src;
	hoveredTopic= topicName;
	if(imgSrc.indexOf("_high.jpg") == -1) {
		document.images[topicName].src = imgSrc.substring(0,imgSrc.indexOf(".jpg")) + "_high.jpg";
	}
}

function resetMenue() {
	var hoveredImgSrc = document.images[hoveredTopic].src;
	if(hoveredTopic != activeTopic) {
		document.images[hoveredTopic].src = hoveredImgSrc.substring(0,hoveredImgSrc.indexOf("_high")) + ".jpg";
	}
}

function setThisTopic() {
	var oldImgSrc = document.images[activeTopic].src;
	if(hoveredTopic != activeTopic) {
		document.images[activeTopic].src = oldImgSrc.substring(0,oldImgSrc.indexOf("_high")) + ".jpg";
		// hier werden die entsprechenden Layer ein- bzw. ausgeschaltet
		document.getElementById(activeTopic + "div").style.visibility ="hidden"
		document.getElementById(hoveredTopic + "div").style.visibility ="visible"
		activeTopic = hoveredTopic;
	}	
}

function setMenueToTopic(topic) {
	hoveredTopic = topic;
	highlightImg(topic);
	setThisTopic();	
}


function satellit(source, name, width, height, resizable, scrollbars, status) {
	satellitenfenster = window.open(source, name, "width=" + width + ",height=" + height + ",resizable=" + resizable + ",scrollbars=" + scrollbars + ",status=" + status + "");
	satellitenfenster.focus();
}