function OpenWindow(img) { }
function CloseWindow() { }

var _BrowserOK = false;
var BaseImgSrc = "scr";
var isSafe = false;
var isInit = 0;

function BrowserCan() {
        if( navigator.appVersion.lastIndexOf("7.") != -1 || navigator.appVersion.lastIndexOf("6.") != -1 || navigator.appVersion.lastIndexOf("5.") != -1 || navigator.appVersion.lastIndexOf("4.") != -1 || navigator.appVersion.lastIndexOf("3.") != -1  )
                {
                        return true;
                }
}

function max(a,b) {
        return (a >= b) ? a : b;
}

function basename(s) {
        var y = s.lastIndexOf(".");
        if (y < 0) {
                y = s.length;
        }
        return s.substring(max(s.indexOf(":"), s.lastIndexOf("/"))+1, y);
}

function baseurl(s) {
        return s.substring(0, max(s.indexOf(":"), s.lastIndexOf("/"))+1);
}

function extn(s) {
        var x = s.lastIndexOf(".");
        if (x <= 0) {
                x = s.length;
        }
        return s.substring(x, s.length);
}

function makeImg(base, name, ext, w, h) {
	 if (BrowserCan()) {
	 		if( name.lastIndexOf("-") == 0) {
        eval(name + " = new Image(" + w + ", " + h + ")");
        eval(name + ".src = \"" + base + name + ext + "\"");
      }
	}
}

function makeMainBtn(it) {
	 if (_BrowserOK) {
        var base = baseurl(it.src);
        var ext = extn(it.src);
        var name = basename(it.src);
        makeImg(base, name, ext, it.width, it.height);
	}
}

function makeBtns(it) {
	 if (_BrowserOK) {
        var base = baseurl(it.src);
        var ext = extn(it.src);
        var name = basename(it.src);
        makeImg(base, name, ext, it.width, it.height);
        name = name.substring(0, name.indexOf("_lo")) + "_hi";
        makeImg(base, name, ext, it.width, it.height);
	}
}

function BuildImgs() {
        if (_BrowserOK) {
                for (var i=0; i<document.images.length; i++) {
                        if (document.images[i].src.indexOf("_lo.") >= 0) {
                                makeBtns(document.images[i]);
                         } else {
                                makeMainBtn(document.images[i]);
                                BaseImgSrc = document.images[i].src;
			 }
                }
                isSafe = true;
        }
}

if (BrowserCan()) {
	_BrowserOK = true;
	eval("function OpenWindow(img) { if (isSafe) { document.images['Karte'].src = eval(img + \"_hi.src\"); } }");
        eval("function CloseWindow() { if (isSafe) { document.images['Karte'].src = \"Handlink.gif\"; } }");
        }