function changeMenuButton(elementid){
    var sourceelement = document.getElementById(elementid);
    if (sourceelement.src.search("_akt.jpg") > -1) sourceelement.src = sourceelement.src.replace(/_akt.jpg/,".jpg");
    else sourceelement.src = sourceelement.src.replace(/.jpg/,"_akt.jpg");
    if (sourceelement.src.search("_akt.gif") > -1) sourceelement.src = sourceelement.src.replace(/_akt.gif/,".gif");
    else sourceelement.src = sourceelement.src.replace(/.gif/,"_akt.gif");
}

function pageLoad(){
    var contentheight = parseInt(document.getElementById('content').offsetHeight);
    var displayheight;
    if(window.innerHeight) //All normal browsers
        displayheight = parseInt(window.innerHeight);
    else //IE
        displayheight = parseInt(document.documentElement.offsetHeight);
    if(contentheight < 312) contentheight = 321;

    if(contentheight < displayheight - 196 - 100) {
        document.getElementById('leftbar').style.height = displayheight - 196 + "px";
        document.getElementById('barright').style.height = displayheight - 196 - 100 + 'px';
        document.getElementById('barrightimg').style.height = displayheight - 196 - 100 + 'px';
        document.getElementById('footer').style.top = displayheight - 100 + "px";
    } else {
        document.getElementById('leftbar').style.height = contentheight + 100 + "px";
        document.getElementById('barright').style.height = contentheight + 'px';
        document.getElementById('barrightimg').style.height = contentheight + 'px';
        document.getElementById('footer').style.top = contentheight + 196 + "px";
    }
    document.getElementById('loading').style.visibility='hidden';
    document.getElementById('maincontainer').style.visibility='visible';

}

function pageLoad_old(){

    resizeScreenElements(
        resizeScreenElements(
            resizeScreenElements(
                resizeScreenElements(
                    resizeScreenElements(0)
                    )
                )
            )
        );

    //resizeScreenElements(0);
    
    document.getElementById('loading').style.visibility='hidden';
    document.getElementById('maincontainer').style.visibility='visible';
}

function resizeScreenElements(lastcontentheight){

    var contentheight = parseInt(document.getElementById('content').offsetHeight);
    if(lastcontentheight != contentheight){

        var displayheight;
        if(window.innerHeight) //All normal browsers
            displayheight = parseInt(window.innerHeight);
        else //IE
            displayheight = parseInt(document.documentElement.offsetHeight);
        if(displayheight < 639) displayheight = 639;

        if(contentheight < displayheight - 196 - 100) {
            document.getElementById('leftbar').style.height = displayheight - 196 - 202 + "px";
            document.getElementById('barright').style.height = displayheight - 196 - 100 + 'px';
            document.getElementById('barrightimg').style.height = displayheight - 196 - 100 + 'px';
            document.getElementById('footer').style.top = displayheight -100 + "px";
        } else {
            document.getElementById('leftbar').style.height = contentheight - 102 + "px";
            document.getElementById('barright').style.height = contentheight + 'px';
            document.getElementById('barrightimg').style.height = contentheight + 'px';
            document.getElementById('footer').style.top = contentheight + 196 + "px";
        }

    //resizeScreenElements(contentheight);
    }

    return contentheight;
}