jQuery.fn.extend({
	selectbox: function(options) {
		return this.each(function() {
			new jQuery.SelectBox(this, options);
		});
	}
});

if (!window.console) {
	var console = {
		log: function(msg) { 
	 }
	}
}

jQuery.fn.extend({
  getUrlVars: function(){
    var vars = [], hash;
    var hashes = window.location.href.slice(window.location.href.indexOf('?') + 1).split('&');
    for(var i = 0; i < hashes.length; i++)
    {
      hash = hashes[i].split('=');
      vars.push(hash[0]);
      vars[hash[0]] = hash[1];
    }
    return vars;
  },
  getUrlVar: function(name){
    return jQuery.fn.getUrlVars()[name];
  }
});

jQuery.SelectBox = function(selectobj, options) {
	
	var opt = options || {};
	opt.inputClass = opt.inputClass || "selectbox";
	opt.containerClass = opt.containerClass || "selectbox-wrapper";
	opt.hoverClass = opt.hoverClass || "current";
	opt.currentClass = opt.selectedClass || "selected"
	opt.debug = opt.debug || false;
	
	var elm_id = selectobj.id;
	var elm_rev = $(selectobj).attr('rev');
	var elm_name = $(selectobj).attr('name');
	var active = -1;
	var inFocus = false;
	var hasfocus = 0;
	var $select = $(selectobj);
	var $container = setupContainer(opt);
	var $input = setupInput(opt);
	$select.hide().before($input).before($container);
	init();
	
	$input
	.click(function(){
	if ($container.is(':visible')) {
	   $input.addClass('selectedBox');
	}
    if (!inFocus) {
		  $container.toggle();
		}
	})
	.focus(function(){
	   if ($container.not(':visible')) {
	       inFocus = true;
	       $container.toggle();
	   }
	})
	.keydown(function(event) {	   
		switch(event.keyCode) {
			case 38: // up
				event.preventDefault();
				moveSelect(-1);
				break;
			case 40: // down
				event.preventDefault();
				moveSelect(1);
				break;
			case 13:
				event.preventDefault();
				$('li.'+opt.hoverClass).trigger('click');
				break;
			case 27:
			  hideMe();
			  break;
		}
	})
	.blur(function() {
		if ($container.is(':visible') && hasfocus > 0 ) {
			if(opt.debug) console.log('container visible and has focus')
		} else {
			
		}
	});


	function hideMe() { 
		hasfocus = 0;
		$container.hide(); 
		$input.removeClass('selectedBox');
	}
	
	function init() {
		$container.append(getSelectOptions($input.attr('id'))).hide();
		var width = 140;
		$container.width(width);
    }
	
	function setupContainer(options) {
		var container = document.createElement("div");
		$container = $(container);
		$container.attr('id', elm_id+'_container');
		$container.addClass(options.containerClass);
		elementsize = $select.children('option').size();
		containerheight = (elementsize * 30);
		$container.height(containerheight);
		
		return $container;
	}
	
	function setupInput(options) {
		var input = document.createElement("input");
		var $input = $(input);
		$input.attr("id", elm_id+"_input");
		$input.attr("type", "text");
		$input.addClass(options.inputClass);
		$input.attr("autocomplete", "off");
		$input.attr("readonly", "readonly");
		$input.attr("tabIndex", $select.attr("tabindex"));
		
		return $input;	
	}
	
	function moveSelect(step) {
		var lis = $("li", $container);
		if (!lis) return;

		active += step;

		if (active < 0) {
			active = 0;
		} else if (active >= lis.size()) {
			active = lis.size() - 1;
		}

		lis.removeClass(opt.hoverClass);

		$(lis[active]).addClass(opt.hoverClass);
	}
	
	function setCurrent() {	
		var li = $("li."+opt.currentClass, $container).get(0);
		var ar = (''+li.id).split('_');
		var el = ar[ar.length-1];
		$select.val(el);
		$input.val($(li).html());
		return true;
	}
	
	// select value
	function getCurrentSelected() {
		return $select.val();
	}

	function getCurrentValue() {
		return $input.val();
	}
	
	function getSelectOptions(parentid) {
		var select_options = new Array();
		var ul = document.createElement('ul');
		$select.children('option').each(function() {
			var li = document.createElement('li');
			li.setAttribute('id', parentid + '_' + $(this).val());
			li.setAttribute('val', $(this).val());
			li.innerHTML = $(this).html();
			if ($(this).is(':selected')) {
				$input.val($(this).html());
				$(li).addClass(opt.currentClass);
			}
			ul.appendChild(li);
			$(li)
			.mouseover(function(event) {
				hasfocus = 1;
				if (opt.debug) console.log('over on : '+this.id);
				jQuery(event.target, $container).addClass(opt.hoverClass);
			})
			.mouseout(function(event) {
				hasfocus = -1;
				if (opt.debug) console.log('out on : '+this.id);
				jQuery(event.target, $container).removeClass(opt.hoverClass);
			})
			.click(function(event) {
				var fl = $('li.'+opt.hoverClass, $container).get(0);
				if (opt.debug) console.log('click on :'+this.id);
				$('li.'+opt.currentClass).removeClass(opt.currentClass); 
				$(this).addClass(opt.currentClass);
				setCurrent();
				locationhref = $(li).attr('val');
				if (elm_rev=="locationed") {
					oldhref = document.location.href;
					if ( oldhref.indexOf('?') == -1) {
						oldhref = oldhref+"?";
					} else {
						oldhref = oldhref+"&";
					}
					debugval = jQuery.fn.getUrlVar(elm_name);
										
					variation = elm_name + "=" + locationhref;
					if (locationhref != debugval) {
						document.location.href = oldhref + variation;
					}
					
				}
				hideMe();
			});
		});
		return ul;
	}
	
};