JavaScript Date () to implement timed display ads

The code is as follows:

The code is as follows

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function Strtodate (str, ext) { if (str = NULL | | | str = = ") return; var Arys = new Array (); Arys = Str.split ('-'); var newdate = new Date (Arys[0], arys[1]-1, arys[2], 9, 0, 0); if (EXT) { Newdate = new Date (newdate.gettime () + 1000 * 60 * 60 * 24); } return newdate; } function Showit (str, start, end) { var date = new Date (); var start = strtodate (start); var end = Strtodate (end, false); if (Date < start && date document.write (str); } }

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Showit (' Your ads ', ' 2011-07-06 ', ' 2011-07-18 ');