String.prototype.format = function () {
		var ret = [];
        var string = this,
            threadsStart = string.indexOf('<span class="filesize">File'),
            threadsEnd = string.indexOf("</blockquote>");
		if (threadsStart != -1 || threadsEnd != -1)
			ret.push( string.slice(threadsStart, threadsEnd) );
		for (i=1;i<10;i++)
		{
			alert(threadsStart);
			threadsStart = string.indexOf('<span class="filesize">File', threadsEnd+1);
            threadsEnd = string.indexOf('</blockquote>', threadsEnd+1);
			if (threadsStart != -1 || threadsEnd != -1)
				ret.push( string.slice(threadsStart, threadsEnd) );
		}
        return ret;
    };