function sys_rollover(Bildname, Dateiname) {if (document.images) {document.images[Bildname].src = Dateiname }}
function sys_print(Link) {fenster=window.open(Link,"Print","width=650,height=600, location=no,menubar=no,scrollbars=yes,status=no,toolbar=no,resizable=yes")}
function sys_search_clear() {if (document.formular_search.search.value=='Stichwort') {document.formular_search.search.value="";}}
function sys_search_add() {if (!document.formular_search.search.value) {document.formular_search.search.value="Stichwort";}}



function sys_vigenere_decrypt (key, chiffre) {
  var i, j = 0;
  var hlp  = 0;
  var text = "";
  var alphabet = "abcdefghijklmnopqrstuvwxyz1234567890@.-";
  var alphaLen = alphabet.length;

  chiffre = chiffre.toLowerCase();
  key     = key.toLowerCase();
  for (i=0; i < chiffre.length; i++) {
    hlp = alphabet.indexOf(chiffre.charAt(i));
    if (hlp >= 0) {
      text = text + alphabet.charAt((alphaLen+(hlp-alphabet.indexOf(key.charAt(j))))%alphaLen);
      j = (j+1) % key.length;
    } else text = text + chiffre.charAt(i);
  }
  return text;
}

function sys_spam_protection (key, chiffre) {
  location.href='mailto:'+sys_vigenere_decrypt(key, chiffre);
}

var thumbnail = new Array();

var sys_references = {
	thumbs : 'reference_thumbs',
	preview : 'preview',
	time : 3000,
	standard_img : '/layout/content/referenzen/picture_clear.gif',
	fadingPreview : Object,
	init : function() {
		if (document.getElementById(this.thumbs)) {
			thumbnail['div'] = document.getElementById(this.thumbs);
		}
		if (document.getElementById(this.preview)) {
			thumbnail['preview'] = document.getElementById(this.preview);
			this.fadingPreview = thumbnail['preview'].cloneNode(false);
			this.fadingPreview.style.position = 'absolute';
			this.fadingPreview.style.top = thumbnail['preview'].offsetTop+'px';
			this.fadingPreview.style.left = thumbnail['preview'].offsetLeft+'px';
			thumbnail['preview'].parentNode.appendChild(this.fadingPreview);
		}
		thumbsID = window.setInterval("sys_references.change()", this.time);
	},
	change : function() {
		var date = new Date();
		var seconds = date.getTime();

		if (!thumbnail['a'] && thumbnail['div'].firstChild) {
			thumbnail['a'] = thumbnail['div'].firstChild;
		} else if (thumbnail['a'] && thumbnail['a'].nextSibling) {
			thumbnail['a'] = thumbnail['a'].nextSibling;
		} else {
			if(thumbnail['img'] && thumbnail['img'].src != thumbnail['img']['old_src']) {
				this.fadingPreview.src = thumbnail['preview'].src;
				this.fadingPreview.style.opacity = '1.0';
				this.fadingPreview.style.filter = "alpha(opacity:"+100+")";
				thumbnail['img'].src = thumbnail['img']['old_src']
				thumbnail['preview'].src = url_path+this.standard_img;
				opacityID = window.setTimeout("sys_references.fadingImages('"+100+"')",100);
			};
			window.clearInterval(thumbsID); return;
		}
		var oid = thumbnail['a'].href.substr(thumbnail['a'].href.indexOf("oid")+4);
		sys_ajax_process_url(xmlHttp_1, url_path + '/scripts/inc/ajax.references.php?oid=' + oid + '&' + seconds,'','sys_references.ajaxHightlight');
	},
	ajaxHightlight : function(content) {
		sys_references.highlight(content);
	},
	highlight : function(content) {
		if(thumbnail['img'] && thumbnail['img'].src != thumbnail['img']['old_src']) {thumbnail['img'].src = thumbnail['img']['old_src']};

		var content = content.split('#');

		if (thumbnail['a'].firstChild) {
			thumbnail['img'] = thumbnail['a'].firstChild;
			thumbnail['img']['old_src'] = thumbnail['img'].src;
		}

		if(content['1']) {
			thumbnail['img'].src = url_path+content[1];
		}
		this.fadingPreview.src = thumbnail['preview'].src;
		this.fadingPreview.style.opacity = '1.0';
		this.fadingPreview.style.filter = "alpha(opacity:"+100+")";
		if(content['2']) {
			thumbnail['preview'].src = url_path+content[2];
		} else {
			thumbnail['preview'].src = url_path+this.standard_img;
		}
		opacityID = window.setTimeout("sys_references.fadingImages('"+100+"')",100);
	},
	fadingImages : function(opacity) {
        var passed = parseInt(opacity);
		var newOpacity = parseInt(passed-10);
        if ( newOpacity > 0 ) {
			this.fadingPreview.style.opacity = '.'+newOpacity;
			this.fadingPreview.style.filter = "alpha(opacity:"+newOpacity+")";
			opacityID = window.setTimeout("sys_references.fadingImages('"+newOpacity+"')",50);
		}
		else {
			this.fadingPreview.style.opacity = '0';
			this.fadingPreview.style.filter = "alpha(opacity:0)";
			clearTimeout(opacityID);
		}
	}
};