// location data 
	var dataArr = {"1":[{"id":"21","name":"Abbotsford"},{"id":"5","name":"Chilliwack"},{"id":"17","name":"Penticton"},{"id":"19","name":"Squamish"},{"id":"69","name":"Summerland Real Estate - Houses for Sale"},{"id":"41","name":"Vernon"},{"id":"6","name":"White Rock"},{"id":"4","name":"Kelowna"}],"0":[{"id":"25","name":"Alberta"},{"id":"1","name":"British Columbia"},{"id":"61","name":"Arizona"},{"id":"7","name":"Nevada"},{"id":"62","name":"Texas"},{"id":"50","name":"Washington"}],"4":[{"id":"15","name":"Antiques & Collectables"},{"id":"56","name":"Flooring, Windows & Doors"},{"id":"10","name":"Home Furnishings & Decor"},{"id":"57","name":"Hot Tub and Spas"},{"id":"24","name":"Jewelry Boutiques"},{"id":"34","name":"Kelowna Hair Salons & Day Spa's"},{"id":"11","name":"Kelowna Real Estate - Houses for Sale"},{"id":"23","name":"Lawn & Garden & Power Equip."},{"id":"16","name":"Musical \/ Instrument"},{"id":"14","name":"Restaurants & Bistros"},{"id":"38","name":"Retail - Art Galleries & Framing"},{"id":"53","name":"Retail - Boats and Watersports Dealer"},{"id":"31","name":"Retail - Children \/ Baby"},{"id":"40","name":"Retail - Clothing and accessories"},{"id":"36","name":"Retail - Eyewear"},{"id":"9","name":"Retail - Kitchen & Bath"},{"id":"13","name":"Retail - Liquor & Wine"},{"id":"46","name":"Retail - Sewing & Vacuums"},{"id":"80","name":"Shoe Stores, Kelowna BC"},{"id":"29","name":"Sports \/ Activities \/Golf"},{"id":"30","name":"Travel & Accomadation's"}],"7":[{"id":"8","name":"Las Vegas"}],"17":[{"id":"70","name":"Penticton Businesses"},{"id":"63","name":"Real Estate - Houses for Sale"}],"19":[{"id":"20","name":"Professional Services"}],"21":[{"id":"59","name":"Scooter Dealers in BC"}],"25":[{"id":"26","name":"Banff"},{"id":"48","name":"Calgary"},{"id":"49","name":"Edmonton"}],"26":[{"id":"27","name":"Antiques, Collectables & Gifts"},{"id":"28","name":"Clothing"}],"48":[{"id":"65","name":"Real Estate - Houses for Sale"}],"50":[{"id":"51","name":"Seattle\/Northwest"}],"61":[{"id":"73","name":"Art Galleries And Framing Stores"},{"id":"72","name":"Best Shopping In Arizona"},{"id":"71","name":"Home Decor, Furnishings & Interior Design"},{"id":"74","name":"Kitchen And Bath Showrooms AZ"}]};
	
	// Init for combobox Element
	var cb_state, cb_city, cb_venue = null;
	
	// init function, call this function after all combobox Form.
	function cb_init() {
		// get elementID
		cb_state	= document.getElementById('state');	// state = combobox ID (<SELECT id="state">)
		cb_city		= document.getElementById('city');
		cb_venue	= document.getElementById('venue');
		
		// add event to element
		cb_state.onchange = function (){
			change_city(this.value);
		};
		cb_city.onchange = function (){
			change_venue(this.value);
		};
		
		// add option to state
		for (var i=0; i < dataArr[0].length; i++) {
			cb_state.options[i] = new Option(dataArr[0][i].name, dataArr[0][i].id, false, false);
		}
		
		change_city(cb_state.options[0].value);
	}
	
	// change city trigger
	function change_city(id) {
		// empty current options
		for (var i=cb_city.options.length; i >=0 ; --i) {
			cb_city.options[i] = null;
		}
		
		// make sure if state have city data
		if (dataArr[id]==undefined) {
			change_venue(-1); // -1 = empty / city haven't venue
			return;
		}
				
		// add option to state
		for (var i=0; i < dataArr[id].length; i++) {
			cb_city.options[i] = new Option(dataArr[id][i].name, dataArr[id][i].id, false, false);
		}
		
		change_venue(cb_city.options[0].value);
	}
	
	// change venue trigger
	function change_venue(id) {
		// empty current options
		for (var i=cb_venue.options.length; i >=0 ; --i) {
			cb_venue.options[0] = null;
		}
		
		if (id == -1 || dataArr[id]==undefined) // no venue
			return; // stop process
		
		for (var i=0; i < dataArr[id].length; i++) {
			cb_venue.options[i] = new Option(dataArr[id][i].name, dataArr[id][i].id, false, false);
		}
	}