function setStyle(id,style,value)
{
    id.style[style] = value;
}
function opacity(el,opacity)
{
        setStyle(el,"filter:","alpha(opacity="+opacity+")");
        setStyle(el,"-moz-opacity",opacity/100);
        setStyle(el,"-khtml-opacity",opacity/100);
        setStyle(el,"opacity",opacity/100);
}
function calendar()
{
        var date = new Date();
        var day = date.getDate();
        var month = date.getMonth();
        var year = date.getYear();
        if(year<=200)
        {
                year += 1900;
        }
        months = new Array('Januar', 'Februar', 'M&auml;rz', 'April', 'Mai', 'Juni', 'July', 'August', 'September', 'Oktober', 'November', 'Dezember');
        days_in_month = new Array(31,28,31,30,31,30,31,31,30,31,30,31);
        if(year%4 == 0 && year!=1900)
        {
                days_in_month[1]=29;
        }
        total = days_in_month[month];
        var date_today = day+' '+months[month]+' '+year;
        beg_j = date;
        beg_j.setDate(1);
        if(beg_j.getDate()==2)
        {
                beg_j=setDate(0);
        }
        beg_j = beg_j.getDay();
        document.write('<table class="cal_calendar" onload="opacity(document.getElementById(\'cal_body\'),20);"><tbody id="cal_body"><tr><th colspan="7">'+date_today+'</th></tr>');
        document.write('<tr class="cal_d_weeks"><th>S</th><th>M</th><th>D</th><th>M</th><th>D</th><th>F</th><th>S</th></tr><tr>');
        week = 0;
        for(i=1;i<=beg_j;i++)
        {
                document.write('<td class="cal_days_bef_aft">'+(days_in_month[month-1]-beg_j+i)+'</td>');
                week++;
        }
        for(i=1;i<=total;i++)
        {
                if(week==0)
                {
                        document.write('<tr>');
                }
                if(day==i)
                {
                        document.write('<td class="cal_today">'+i+'</td>');
                }
                else
                {
                        document.write('<td>'+i+'</td>');
                }
                week++;
                if(week==7)
                {
                        document.write('</tr>');
                        week=0;
                }
        }
        for(i=1;week!=0;i++)
        {
                document.write('<td class="cal_days_bef_aft">'+i+'</td>');
                week++;
                if(week==7)
                {
                        document.write('</tr>');
                        week=0;
                }
        }
        document.write('</tbody></table>');
        opacity(document.getElementById('cal_body'),70);
        return true;
}