var catgVales = 
'<option value="Not chosen">-½Ð¿ï¾Ü-</option>' +
'<option value="Internet">¤¬Ápºô</option>' +
'<option value="eDM">¹q¶l¢¬¹q¤l³q°T</option>' +
'<option value="WSI Web Site">¥»¤½¥qºô¯¸</option>' +
'<option value="Print">³ø¯È¢¬Âø»x¼s§i</option>' +
'<option value="Electronic Media">¹q¤l¶Ç´C</option>' +
'<option value="Outdoor">¤á¥~¼s§i</option>' +
'<option value="Direct Marketing">ª½¾P</option>' +
'<option value="Event">®iÄý¢¬±À¼s¬¡°Ê</option>' +
'<option value="Joint Promotion">ÁpÀç±À¼s­p¹º</option>' +
'<option value="Mobile">¬y°Ê³q°T</option>' +
'<option value="Referral & WOM">¿Ë¤Í±ÀÂË¢¬¤f¸O</option>' +
'<option value="Others">¨ä¥L</option>';

function refreshSupplier(catg){
	var opts = null;
	var selectedCatg = catg.value;
	var supplier = document.getElementById('student_supplier');
	
	if (selectedCatg == "Joint Promotion"){
		opts = new Array(new Option("-½Ð¿ï¾Ü-", "Not chosen"),
			new Option("¬P®i»È¦æ«H¥Î¥d", "DBS"),
			new Option("ùڥͻȦ死´ä¤¤¤å¤j¾Ç«H¥Î¥d", "Hang Seng - CU Promotion"),
			new Option("¶×Â׻Ȧ椤¤p¥øÀu´f¥d", "HSBC SME"),
			new Option("UAÀ¸°|", "UA Cinema"),
			new Option("´í¥´»È¦æ«H¥Î¥d", "Standard Chartered"));
	} else if (selectedCatg == "Others"){
		opts =  new Array(new Option("-½Ð¿ï¾Ü-", "Not chosen"),
			new Option("«ùÄò¶i­×°òª÷½Òµ{¦W³æ", "Government Funding Listing"),
			new Option("Ãبé¡ÐÄ«ªG¤é³ø¥Xª©¡ÕIdioms½ì¨ý­^»y¡Ö", "Apple Daily Idiom Booklet Coupons"),
			new Option("Ãبé¡Ð2007¦~¤ë¾ä", "WSI 2007 Calendar Coupons"));
	} else if (selectedCatg == "eDM"){
		opts =  new Array(new Option("-½Ð¿ï¾Ü-", "Not chosen"),
			new Option("¥»¤½¥q", "WSI"),
			new Option("·s®öºô", "Sina"),
			new Option("¨D¾¼s³õ", "Job Market"),
			new Option("Recruit", "Recruit"),
			new Option("©Û¾", "Jiu Jik"),
			new Option("Beauty Exchange", "Beauty Exchange"),
			new Option("JobsDB", "JobsDB"),
			new Option("MSN", "MSN"));
	} else if (selectedCatg == "Event"){
		opts = new Array(new Option("-½Ð¿ï¾Ü-", "Not chosen"),
			new Option("±Ð¨|¤Î¾·~³ÕÄý", "Education & Career Expo"),
			new Option("¨D¾¼s³õ¾·~³ÕÄý", "Job Market Expo"),
			new Option("¶}©ñ¤é", "Open House"));
	} else if (selectedCatg == "Internet"){
		opts = new Array(new Option("-½Ð¿ï¾Ü-", "Not chosen"),
			new Option("¶®ªêºô¯¸", "Yahoo"),
			new Option("MSNºô¯¸", "MSN"),
			new Option("·s®öºô", "Sina"),
			new Option("¨D¾¼s³õºô¯¸", "Job Market"),
			new Option("²K¹Fºô¯¸", "Timway"),
			new Option("Recruitºô¯¸", "Recruit"),
			new Option("©Û¾ºô¯¸", "Jiu Jik"),
			new Option("Googleºô¯¸", "Google"),
			new Option("µL½u¹qµøºô¯¸", "TVB"),
			new Option("Ä«ªG¤é³øºô¯¸", "Apple Daily"),
			new Option("JobsDBºô¯¸", "JobsDB"),
			new Option("­»´ä°Q½×°ÏDiscuss.com", "Discuss"),
			new Option("ªF¤è¤é³øºô¯¸", "Orisun"),
			new Option("·j¯Á¤ÞÀº", "Search Engine"));
	} else if (selectedCatg == "Direct Marketing"){
		opts = new Array(new Option("-½Ð¿ï¾Ü-", "Not chosen"),
			new Option("­»´ä¶l¬Fª½¾P¨ç¥ó", "HK Post - Mail Drop"),
			new Option("¤â¬£¶Ç³æ", "Hand Distribution"));
	} else if (selectedCatg == "Outdoor"){
		opts = new Array(new Option("-½Ð¿ï¾Ü-", "Not chosen"),
			new Option("¦aÅK", "MTR"),
			new Option("¤E¼sÅK¸ô", "KCR"),
			new Option("¨ä¥L", "Signage & Billboard"));
	} else if (selectedCatg == "Print"){
		opts = new Array(new Option("-½Ð¿ï¾Ü-", "Not chosen"),
			new Option("Ä«ªG¤é³ø", "Apple Daily"),
			new Option("¨D¾¼s³õ", "Job Market"),
			new Option("Recruit", "Recruit"),
			new Option("©Û¾", "Jiu Jik"),
			new Option("³£¥«¤é³ø", "Metro Daily"),
			new Option("Metrolife", "Metrolife"));
	} else if (selectedCatg == "Electronic Media"){
		opts = new Array(new Option("-½Ð¿ï¾Ü-", "Not chosen"),
			new Option("°Ó·~¤@¥x", "Commercial Radio 1"),
			new Option("°Ó·~¤G¥x", "Commercial Radio 2"),
			new Option("·s«°®T¼Ö¥x", "Metro Showbiz"),
			new Option("µL½u¹qµø»B»A¥x", "TVB"));
	} else if (selectedCatg == "Referral & WOM"){
		opts = new Array(new Option("-½Ð¿ï¾Ü-", "Not chosen"),
			new Option("¿Ë¤Í±ÀÂË", "Referral"),
			new Option("¤f¸O", "Word Of Mouth"));
	} else if (selectedCatg == "WSI Web Site"){
		opts = new Array(new Option("-½Ð¿ï¾Ü-", "Not chosen"),
			new Option("¥»¤½¥qºô¯¸", "WSI Web Site"));
	} else if (selectedCatg == "Mobile"){
		opts = new Array(new Option("-½Ð¿ï¾Ü-", "Not chosen"),
			new Option("¼Æ½X³qWAP±À¼s", "Smartone WAP Promotion"));
	}else{
		opts = new Array(new Option("-½Ð¿ï¾Ü-", "Not chosen"));
	}

	for (i=supplier.options.length-1; i >= 0 ; i--){
		supplier.options[i] = null;
	}

	for (i=0; i < opts.length; i++){
		supplier.options[i] = opts[i];
	}
}


function printCentreOptions(){
	var opt = '';

	var centres = new Array('<option value="HK1">»ÉÆrÆW</option>',
	'<option value="HK2">ªo¦y©ô</option>',
	'<option value="HK3">¯þÆW</option>',
	'<option value="HK4">Æ[¶í</option>',
	'<option value="HK7">¨F¥Ð</option>');

	var count = 0;
	var pos = 0;

	while (count < 5){
		pos = Math.floor(5*Math.random())
		if (centres[pos] != ''){
			opt = opt + centres[pos];
			centres[pos] = '';
			count = count + 1;
		}
	}
	return opt;
}