function maximize(ibutton){
var leiste = ibutton.parentNode;
leiste.nextSibling.style.display='block';
leiste.parentNode.setAttribute("className","maximized");
leiste.parentNode.setAttribute("class","maximized");
}


function minimize(ibutton){
var leiste = ibutton.parentNode;
leiste.nextSibling.style.display='none';
leiste.parentNode.setAttribute("className","minimized");
leiste.parentNode.setAttribute("class","minimized");
}

function hover(that){
that.previousSibling.firstChild.setAttribute("className", "overhover");
that.previousSibling.firstChild.setAttribute("class", "overhover");
}

function unhover(that){
that.previousSibling.firstChild.setAttribute("className", "outover");
that.previousSibling.firstChild.setAttribute("class", "outover");
}