function openPopup(url, winname, x, y) {
    var fenster;
	x += 10;
    y += 10;
    fenster=window.open(url, winname, "toolbar=no,statusbar=yes,locationbar=no,scrollbars=no,menubar=yes,width=" + x + ",height=" + y);
	fenster.focus();
}
function openPopup_scroll(url, winname, x, y) {
	var fenster;
    x += 20;
    y += 20;
    fenster=window.open(url, winname, "toolbar=no,statusbar=yes,locationbar=no,scrollbars=yes,menubar=yes,width=" + x + ",height=" + y);
	fenster.focus();
}
function focuswechseldich(feld, next, anzahl)
		{
			nextid = document.getElementById(next);
			if(feld.value.length >= anzahl)
			{
				nextid.focus();
			}
		}


/*-----------------------------------------------------*/
/* externer link                                       */
/*-----------------------------------------------------*/

function open_external_link() {
    if (!document.getElementsByTagName) return;
    var anchors = document.getElementsByTagName("a");
    for (var i=0; i<anchors.length; i++) {
        var anchor = anchors[i];
        if (anchor.getAttribute("href") && anchor.getAttribute("rel") == "external")
        anchor.target = "_blank";
    }
}