var ie  = document.all;
var nn6 = document.getElementById && !document.all;
var ie5 = document.getElementById && document.all && document.styleSheets;
var opera = window.opera;
var op5=(document.getElementById&&document.all&&!document.styleSheets)?1:0;

var scrollpos = false;
var fensterhoehe = false;
var abstand = 40;


function qglink(bild, linkname, breite, hoehe){
    
    document.getElementById(linkname).href="#";
    document.getElementById(linkname).target="_self";
    
    
    
    //fenster ausmessen
    
    scrollpos = nn6 ? window.pageYOffset : document.documentElement.scrollTop;
    fensterhoehe = nn6 ? window.innerHeight : document.documentElement.clientHeight;
    
    if (opera) fensterhoehe = window.innerHeight;
    
    //hintergrund
    
    hg_an();
    
    //bild positionieren
    
    //breite = parseInt(breite) + 80;
    
    links = (document.body.offsetWidth - breite) / 2;
    oben =  scrollpos + ((fensterhoehe - hoehe) / 2);
    
    document.getElementById("edit2").style.left = links+"px";
    document.getElementById("edit2").style.top = oben+"px";
    
    //document.getElementById("edit2").style.width = (breite + abstand) + "px";
    //document.getElementById("edit2").style.height = (hoehe + abstand) + "px";
    
    document.getElementById("edit2").innerHTML = '<div class="glbild"><a href="javascript:void(0)" onclick="closebild()"><img src="'+ bild +'" /></a><div class="glclose"><a href="javascript:void(0)" onclick="closebild()">[X] Bild schließen</a></div></div>';
}

function hg_an(){

    var browserName = navigator.appName;
    var browserVersion = parseInt(navigator.appVersion);
    
    
    
    //if (opera) document.getElementById("edit1").style.backgroundImage = "url("+ pfad +"js/overlay_schwarz.png)";
    //else
    document.getElementById("edit1").style.backgroundColor = "#000000";
    
    document.getElementById("edit1").style.filter = "alpha(opacity=50)";
    document.getElementById("edit1").style.MozOpacity = "0.5";
    document.getElementById("edit1").style.KHTMLOpacity = "0.5";
    document.getElementById("edit1").style.opacity = "0.5";
    
    scrollpos = nn6 ? window.pageYOffset : document.documentElement.scrollTop;
    fensterhoehe = nn6 ? window.innerHeight : document.documentElement.clientHeight;
    
    if(fensterhoehe == 0)
    {
         document.getElementById("edit1").style.backgroundColor = "";
         fensterhoehe = top.document.body.clientHeight;
    }
    
    if (opera) fensterhoehe = window.innerHeight;
    
    document.getElementById("edit1").style.width = "100%";
    
    if (nn6) 
    {
        if(document.body.offsetHeight > window.innerHeight)
            document.getElementById("edit1").style.height = document.body.offsetHeight+"px";
        else
            document.getElementById("edit1").style.height = window.innerHeight+"px";
    }
    else if (opera)
    {
         if(document.body.offsetHeight > window.innerHeight)
            document.getElementById("edit1").style.height = document.body.offsetHeight+"px";
         else
            document.getElementById("edit1").style.height = window.innerHeight+"px";                 
    }
    else
    {
         document.getElementById("edit1").style.height = top.document.body.clientHeight+"px";             
    }
    
    
}