function right(mainStr2,lngLen) { 
	// alert(mainStr2.length) 	
	mainStr=mainStr2.toLowerCase();
	if (mainStr.length-lngLen>=0 && mainStr.length>=0 && mainStr.length-lngLen<=mainStr.length) { 
	return mainStr.substring(mainStr.length-lngLen,mainStr.length)} 
	else{return null} 
} 



	adv_count = 6;
	adv_width=468;
	adv_height=60;

	adv_url = new Array(adv_count);
	adv_gif = new Array(adv_count);
	var today = new Date();
	var adv_expireDate = new Array(adv_count);
	var countTime=0;

	adv_url[0] = 'http://www.yp.com.hk/';
	adv_gif[0] = 'http://www.q9tech.com/banner/ypbusiness.gif';
	adv_expireDate[0] = new Date("December 31, 2020");

	adv_url[1] = 'http://equiz.e-trainer.com.hk';
	adv_gif[1] = 'http://www.q9tech.com/banner/wziq.gif';
	adv_expireDate[1]= new Date("December 31, 2005");
	
	adv_url[2] =  'http://www.kaspersky.com.hk/';                                              
	adv_gif[2] =  'http://www.q9tech.com/banner/Kaspersky20080811.gif';
	adv_expireDate[2]= new Date("March 29, 2009");

                                                                                               
	adv_url[3] =  'http://www.q9tech.com/b5/services/download/download.php3#q9freeDL';         
	adv_gif[3] =  'http://www.q9tech.com/banner/qcpinyin_468x60_banner.gif';
	adv_expireDate[3]= new Date("December 31, 2020");
                                                                                               
	adv_url[4] =  'http://www.fulbright.com.hk';                                               
	adv_gif[4] =  'http://www.q9tech.com/banner/Fulbright20081103.jpg'; 
	adv_expireDate[4]= new Date("June 9, 2009");

	adv_url[5] =  'http://www.eset.hk/';                                               
	adv_gif[5] =  'http://www.q9tech.com/banner/NODbanner468x60.swf'; 
	adv_expireDate[5]= new Date("December 31, 2010");
	
	adv_show = Math.floor(Math.random() * adv_count);	
	
	while (1) {
		if (countTime>20) break;
		if (adv_expireDate[adv_show] >= today) break;				
		adv_show = Math.floor(Math.random() * adv_count);
		countTime++;
	}


	document.write('<td rowspan="4" colspan="10" background="http://www.q9tech.com/b5/img/main_r26_c09.gif"><a href="'+adv_url[adv_show]+'" target="_blank">');

	if (right(adv_gif[adv_show],4)==".swf")
	{
		document.write('<OBJECT classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=5,0,0,0"  WIDTH='+adv_width+' HEIGHT='+adv_height+'>  <PARAM NAME=movie VALUE="'+adv_gif[adv_show]+'"> <PARAM NAME=quality VALUE=high> <PARAM NAME=scale VALUE=exactfit> <PARAM NAME=bgcolor VALUE=#FFFFFF> <EMBED src="'+adv_gif[adv_show]+'" quality=high scale=exactfit bgcolor=#FFFFFF  WIDTH='+adv_width+' HEIGHT='+adv_height+' TYPE="application/x-shockwave-flash" PLUGINSPAGE="http://www.macromedia.com/shockwave/download/index.cgi?P1_Prod_Version=ShockwaveFlash"></EMBED> </OBJECT>');		
	}
	else 
	{
		document.write('<img name="banner" src="'+adv_gif[adv_show]+'" width="'+adv_width+'" height="'+adv_height+'" border="0">');
	}
		
	document.write('</a></td>');