// JavaScript Document

var ua = navigator.userAgent.toLowerCase();
var index_ie6=ua.indexOf('msie 6.0');
var index_ie5=ua.indexOf('msie 5.0');
var index_safari=ua.indexOf('safari');
var index_mozilla=ua.indexOf('firefox');
var index_nn=ua.indexOf('netscape');

window.onload = function(){
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        var hoehe=document.getElementById('mitte').scrollHeight;
        schatten=hoehe + 'px';
        document.getElementById('main_links').style.height=schatten;
        document.getElementById('main_rechts').style.height=schatten;
    
}