var ad_type = 'ms1459';
var ad_sc = '<script type="text/javascript" '
    + 'src="http://ad.csdn.net/scripts/ad-' + ad_type + '.js"'
    + '></'
    + 'script>';
document.writeln(ad_sc);

ad_type = 'ms1462_2';
ad_sc = '<script type="text/javascript" '
    + 'src="http://ad.csdn.net/scripts/ad-' + ad_type + '.js"'
    + '></'
    + 'script>';

document.writeln(ad_sc);
/*
ad_type = 'ms1457_3';
ad_sc = '<script type="text/javascript" '
    + 'src="http://ad.csdn.net/scripts/ad-' + ad_type + '.js"'
    + '></'
    + 'script>';

document.writeln(ad_sc);

ad_type = 'ms1446_4';
ad_sc = '<script type="text/javascript" '
    + 'src="http://ad.csdn.net/scripts/ad-' + ad_type + '.js"'
    + '></'
    + 'script>';

document.writeln(ad_sc);

ad_type = 'ms1324_5';
ad_sc = '<script type="text/javascript" '
    + 'src="http://ad.csdn.net/scripts/ad-' + ad_type + '.js"'
    + '></'
    + 'script>';

document.writeln(ad_sc);
*/