function setChangeDate(val){
    switch(val){
        case '1':
            document.getElementById('report_start').value='2012-05-20';
            document.getElementById('report_end').value='2012-05-20';
            break;
        case '2':
            document.getElementById('report_start').value='2012-05-19';
            document.getElementById('report_end').value='2012-05-19';
            break;
        case '3':
            document.getElementById('report_start').value='2012-04-19';
            document.getElementById('report_end').value='2012-05-19';
            break;
        case '4':
            document.getElementById('report_start').value='2012-01-01';
            document.getElementById('report_end').value='2012-12-31';
            break;
        case '5':
            document.getElementById('report_start').value='2011-01-01';
            document.getElementById('report_end').value='2011-12-31';
            break;
        case '6':
            document.getElementById('report_start').value='2012-05-01';
            document.getElementById('report_end').value='2012-05-31';
            break;
        case '7':
            document.getElementById('report_start').value='2012-04-01';
            document.getElementById('report_end').value='2012-04-30';
            break;            
        case '8':
            document.getElementById('report_start').value='2012-05-13';
            document.getElementById('report_end').value='2012-05-20';
            break;
        case '9':
            document.getElementById('report_start').value='2012-05-14';
            document.getElementById('report_end').value='2012-05-20';
            break;
    }
}