var win = null;
function Popup(mypage,myname,w,h,scroller)
{
	LeftPosition = (screen.width) ? (screen.width-w)/2 : 0;
	TopPosition = (screen.height) ? (screen.height-h)/2 : 0;
	settings = 'height='+h+',width='+w+',top='+TopPosition+',left='+LeftPosition+',scrollbars='+scroller+''
	win = window.open(mypage,myname,settings)
}

function changeContent(id, txt) {
	document.getElementById(id).innerHTML = txt;
}

function fbs_click() {
	u=location.href;
	t=document.title;	window.open('http://www.facebook.com/sharer.php?u='+encodeURIComponent(u)+'&t='+encodeURIComponent(t),'sharer','toolbar=0,status=0,width=626,height=436');
	return false;
}

function showLink(node, showit) {
	mlink = document.getElementById(node);
	if (showit)	
		mlink.className = "submenuitem subselected";
	else 
		mlink.className = "submenuitem";
}

function set_bookmark(title,url) {
	if (window.sidebar) // firefox
		window.sidebar.addPanel(title, url, "");
	else if(window.opera && window.print){ // opera
		var elem = document.createElement('a');
		elem.setAttribute('href',url);
		elem.setAttribute('title',title);
		elem.setAttribute('rel','sidebar');
		elem.click();
	}
	else if(document.all)// ie
		window.external.AddFavorite(url, title);
}

function Left(str, n){
	if (n <= 0)
	    return "";
	else if (n > String(str).length)
	    return str;
	else
	    return String(str).substring(0,n);
}
function Right(str, n){
    if (n <= 0)
       return "";
    else if (n > String(str).length)
       return str;
    else {
       var iLen = String(str).length;
       return String(str).substring(iLen, iLen - n);
    }
}

function trim(str, chars) {
	return ltrim(rtrim(str, chars), chars);
}

function ltrim(str, chars) {
	chars = chars || "\\s";
	return str.replace(new RegExp("^[" + chars + "]+", "g"), "");
}

function rtrim(str, chars) {
	chars = chars || "\\s";
	return str.replace(new RegExp("[" + chars + "]+$", "g"), "");
}

function textCounter(field, countfield, maxlimit) {
	if (field.value.length > maxlimit)
		field.value = field.value.substring(0, maxlimit);
	else {
		leftchars = maxlimit - field.value.length;
		if (leftchars < 8)
			document.getElementById(countfield).className="fontSmall red";
		else
			document.getElementById(countfield).className="fontSmall dark";
		document.getElementById(countfield).innerHTML = "Noch " + leftchars + " Zeichen m&ouml;glich";
	}
}

function SetAllCheckBoxes(FormName, FieldName, CheckValue)
{
	if(!document.forms[FormName])
		return;
	var objCheckBoxes = document.forms[FormName].elements[FieldName];
	if(!objCheckBoxes)
		return;
	var countCheckBoxes = objCheckBoxes.length;
	if(!countCheckBoxes)
		objCheckBoxes.checked = CheckValue;
	else
		// set the check value for all check boxes
		for(var i = 0; i < countCheckBoxes; i++)
			objCheckBoxes[i].checked = CheckValue;
}

function toggleElem(id){
	var myelem = document.getElementById(id);
	if (myelem.style.visibility == "visible")
		myelem.style.visibility = "hidden";
	else
		myelem.style.visibility = "visible";
}