// <![CDATA[

/* Usage:
	
	<a href="foo.html" target="nuon_win" 
		onclick="link_popup(this, 'width=400,height=300,status=yes,resizeable=no'); return false">

*/
function link_popup(src, features) {	
	return raw_popup(src.getAttribute('href'),
	src.getAttribute('target') || '_blank',
	features);
}

    function openwin(url, params){
		  page = window.open(url,"hop",params);
		  page.focus();
		  return false;
    }

function raw_popup(url, target, features) {
	var theWindow = window.open(url, target, features);
	theWindow.focus();
	return theWindow;
}

function initRollovers() {

	if (!document.getElementById)
		return

	var aPreLoad = new Array();
	var sTempSrc;
	var aImages = document.getElementsByTagName('img');

	for (var i = 0; i < aImages.length; i++) {
		if (aImages[i].className == 'imgover') {
			var src = aImages[i].getAttribute('src');
			var ftype = src.substring(src.lastIndexOf('.'), src.length);
			// Letzten Buchstaben extrahieren um zu checken ob gerade aktiv oder nicht
			var ending = src.substring(0, src.lastIndexOf('.'));
			ending = ending.substring(ending.length - 2);
			if(ending != '_a') {
				var hsrc = src.replace(ftype, '_a'+ftype);

				aImages[i].setAttribute('hsrc', hsrc);

				aPreLoad[i] = new Image();
				aPreLoad[i].src = hsrc;

				aImages[i].onmouseover = function() {
					sTempSrc = this.getAttribute('src');
					this.setAttribute('src', this.getAttribute('hsrc'));
				}

				aImages[i].onmouseout = function() {
					if (!sTempSrc)
						sTempSrc = this.getAttribute('src').replace('_a'+ftype, ftype);
					this.setAttribute('src', sTempSrc);
				}
			}
		}
	}
}

/** Eingabe Felder leeren **/
function clearField(field, defaultVal) {
	if(field.value == defaultVal)
		field.value = "";
}

/** Eingabe Felder füllen wenn sich der Inhalt nicht geändert hat**/
function setField(field, defaultVal) {
	if(field.value == '')
		field.value = defaultVal;
}

// ]]>