if (document.layers) {
    sW = screen.availWidth;
    sH = screen.availHeight;
} else {
    sH = screen.height;
    sW = screen.width;
}

function popup (URL) {
	var winW = 780;
	var winH = 540;

	var winX = (sW / 2) - (winW / 2);
	var winY = (sH / 2) - (winH / 2);

        window.open(URL, "popup_resize",
        "width=780,height=540,resizable=no,scrollbars=yes,top="+winY+",left="+winX);
}

function init_nav() {
	if (top.top_frame != null && top_highlight != null)
		top.top_frame.highlight(top_highlight);
	if (parent.subnavi != null && subnav_highlight != null)
		parent.subnavi.highlight(subnav_highlight);
	// Resize-Test
	if (parent.doResize)
		parent.doResize();
}

function zoom_pic (URL, title, width, height) {
	var winW = width;
	var winH = height;

	var winX = (sW / 2) - (winW / 2);
	var winY = (sH / 2) - (winH / 2);

        var win = window.open("", "popup_noresize", "width=" + winW + 
                                   ",height=" + winH + ",scrollbars=no,top=" + winY + ",left=" + winX);

        var doc = win.document;
        doc.open("text/html", "replace");
        
        doc.write("<HTML><HEAD><TITLE>ALPHA SHIP - " + title + "</TITLE></HEAD>");
	doc.write("<BODY bgcolor=#FFFFFF onload=focus() marginwidth=0 marginheight=0 topmargin=0 leftmargin=0>")
        doc.write("<div aligngn='center' valign='middle' align=center>");
        doc.write("<img src="+ URL +" border=0 width=" + width + " height=" + height + "><br></div></BODY></HTML>");
        doc.close();
}

