var newwin, links, oben, settings;
function stellenmarkt(url,name,breit,hoch,eigenschaften)
    {
    links    = (screen.width)  ? (screen.width-breit)/2 : 0;
    oben     = (screen.height) ? (screen.height-hoch)/3 : 0;
    settings = 'width='+breit+',height='+hoch+',screenX='+links+',left='+links+',screenY='+oben+',top='+oben+','+eigenschaften;

    newwin   = window.open(url,name,settings);
    setTimeout('newwin.focus();',200);
    }