// ===================================================================
// Author: Matt Kruse <matt@mattkruse.com>
// WWW: http://www.mattkruse.com/
//
// NOTICE: You may use this code for any purpose, commercial or
// private, without any further permission from the author. You may
// remove this notice from your final code if you wish, however it is
// appreciated by the author if at least my web site address is kept.
//
// You may *NOT* re-distribute this code in any way except through its
// use. That means, you can include it in your product, or your web
// site, or any other form where the code is actually being used. You
// may not put the plain javascript up on your site for download or
// include it in your javascript libraries for download. 
// If you wish to share this code with others, please just point them
// to the URL instead.
// Please DO NOT link directly to my .js files from your site. Copy
// the files to your server and use them there. Thank you.
// ===================================================================

var dynamicOptionListCount = 0;
var dynamicOptionListObjects = new Array();

function initDynamicOptionLists(funcToCal) {
	for (var i = 0; i < dynamicOptionListObjects.length; i++) {
		var dol = dynamicOptionListObjects[i];
		if (dol.formName != null) {
			dol.form = document.forms[dol.formName];
		} else {
			if (dol.formIndex != null) {
				dol.form = document.forms[dol.formIndex];
			} else {
				var name = dol.fieldNames[0][0];
				for (var f = 0; f < document.forms.length; f++) {
					if (typeof (document.forms[f][name]) != "undefined") {						
						dol.form = document.forms[f];
						break;
					}
				}
				if (dol.form == null) {
//					alert("ERRO: Não foi possível encontrar o objeto form " + name + " em nenhum formulário da página! Init cancelada");
//					alert("ERROR: Couldn't find form element " + name + " in any form on the page! Init aborted");
					return;
				}
			}
		}
		
		for (var j = 0; j < dol.fieldNames.length; j++) {
			for (var k = 0; k < dol.fieldNames[j].length - 1; k++) {
				var selObj = dol.form[dol.fieldNames[j][k]];
				if (typeof (selObj) == "undefined") {
//					alert("Select box " + dol.fieldNames[j][k] + " não localizada no formulário. Init cancelada");
//					alert("Select box named " + dol.fieldNames[j][k] + " could not be found in the form. Init aborted");
					return;
				}
				if (k == 0) {
					if (selObj.options != null) {
						for (l = 0; l < selObj.options.length; l++) {
							var sopt = selObj.options[l];
							var m = dol.findMatchingOptionInArray(dol.options, sopt.text, sopt.value, false);
							if (m != null) {
								var reselectForNN6 = sopt.selected;
								var m2 = new Option(sopt.text, sopt.value, sopt.defaultSelected, sopt.selected);
								m2.selected = sopt.selected;
								m2.defaultSelected = sopt.defaultSelected;
								m2.DOLOption = m;
								selObj.options[l] = m2;
								selObj.options[l].selected = reselectForNN6;
							}
						}
					}
				}
				if (funcToCal != null) {
					selObj.onchange = new Function("dynamicOptionListObjects[" + dol.index + "].change(this);"+funcToCal);
				}else{
					selObj.onchange = new Function("dynamicOptionListObjects[" + dol.index + "].change(this);");
				}
			}
		}
	}
	resetDynamicOptionLists();
}

function resetDynamicOptionLists(theform) {
	for (var i = 0; i < dynamicOptionListObjects.length; i++) {
		var dol = dynamicOptionListObjects[i];
		if (typeof (theform) == "undefined" || theform == null || theform == dol.form) {
			for (var j = 0; j < dol.fieldNames.length; j++) {
				dol.change(dol.form[dol.fieldNames[j][0]], true);
			}
		}
	}
}

function DOLOption(text, value, defaultSelected, selected) {
//	this.option = new option(text, value);
	this.text = text;
	this.value = value;
	this.defaultSelected = defaultSelected;
	this.selected = selected;
	this.options = new Array();
	return this;
}

function DynamicOptionList() {
	this.form = null;
	this.options = new Array();
	this.longestString = new Array();
	this.numberOfOptions = new Array();
	this.currentNode = null;
	this.currentField = null;
	this.currentNodeDepth = 0;
	this.fieldNames = new Array();
	this.formIndex = null;
	this.formName = null;
	this.fieldListIndexes = new Object();
	this.fieldIndexes = new Object();
	this.selectFirstOption = false;
	this.numberOfOptions = new Array();
	this.longestString = new Array();
	this.values = new Object();
	this.forValue = DOL_forValue;
	this.forText = DOL_forText;
	this.forField = DOL_forField;
	this.forX = DOL_forX;
	this.addOptions = DOL_addOptions;
	this.addOptionsTextValue = DOL_addOptionsTextValue;
	this.setDefaultOptions = DOL_setDefaultOptions;
	this.setValues = DOL_setValues;
	this.setValue = DOL_setValues;
	this.setFormIndex = DOL_setFormIndex;
	this.setFormName = DOL_setFormName;
	this.printOptions = DOL_printOptions;
	this.addDependentFields = DOL_addDependentFields;
	this.change = DOL_change;
	this.child = DOL_child;
	this.selectChildOptions = DOL_selectChildOptions;
	this.populateChild = DOL_populateChild;
	this.change = DOL_change;
	this.addNewOptionToList = DOL_addNewOptionToList;
	this.findMatchingOptionInArray = DOL_findMatchingOptionInArray;
	if (arguments.length > 0) {
		for (var i = 0; i < arguments.length; i++) {
			this.fieldListIndexes[arguments[i].toString()] = this.fieldNames.length;
			this.fieldIndexes[arguments[i].toString()] = i;
		}
		this.fieldNames[this.fieldNames.length] = arguments;
	}
	this.index = window.dynamicOptionListCount++;
	window["dynamicOptionListObjects"][this.index] = this;
}

function DOL_findMatchingOptionInArray(a, text, value, exactMatchRequired) {
	if (a == null || typeof (a) == "undefined") {
		return null;
	}
	var value_match = null;
	var text_match = null;
	for (var i = 0; i < a.length; i++) {
		var opt = a[i];
		if (opt.value == value && opt.text == text) {
			return opt;
		}
		if (!exactMatchRequired) {
			if (value_match == null && value != null && opt.value == value) {
				value_match = opt;
			}
			if (text_match == null && text != null && opt.text == text) {
				text_match = opt;
			}
		}
	}
	return (value_match != null) ? value_match : text_match;
}

function DOL_forX(s, type) {
	if (this.currentNode == null) {
		this.currentNodeDepth = 0;
	}
	var useNode = (this.currentNode == null) ? this : this.currentNode;
	var o = this.findMatchingOptionInArray(useNode["options"], (type == "text") ? s : null, (type == "value") ? s : null, false);
	if (o == null) {
		o = new DOLOption(null, null, false, false);
		o[type] = s;
		useNode.options[useNode.options.length] = o;
	}
	this.currentNode = o;
	this.currentNodeDepth++;
	return this;
}

function DOL_forValue(s) {
	return this.forX(s, "value");
}

function DOL_forText(s) {
	return this.forX(s, "text");
}

function DOL_forField(f) {
	this.currentField = f;
	return this;
}

function DOL_addNewOptionToList(a, text, value, defaultSelected) {
	var o = new DOLOption(text, value, defaultSelected, false);
	if (a == null) {
		a = new Array();
	}
	for (var i = 0; i < a.length; i++) {
		if (a[i].text == o.text && a[i].value == o.value) {
//		if (a[i].text == o.option.text && a[i].value == o.option.value) {
			if (o.selected) {
				a[i].selected = true;
			}
			if (o.defaultSelected) {
				a[i].defaultSelected = true;
			}
			return a;
		}
	}
	a[a.length] = o;
}

function DOL_addOptions() {
	if (this.currentNode == null) {
		this.currentNode = this;
	}
	if (this.currentNode["options"] == null) {
		this.currentNode["options"] = new Array();
	}
	for (var i = 0; i < arguments.length; i++) {
		var text = arguments[i];
		this.addNewOptionToList(this.currentNode.options, text, text, false);
		if (typeof (this.numberOfOptions[this.currentNodeDepth]) == "undefined") {
			this.numberOfOptions[this.currentNodeDepth] = 0;
		}
		if (this.currentNode.options.length > this.numberOfOptions[this.currentNodeDepth]) {
			this.numberOfOptions[this.currentNodeDepth] = this.currentNode.options.length;
		}
		if (typeof (this.longestString[this.currentNodeDepth]) == "undefined" || (text.length > this.longestString[this.currentNodeDepth].length)) {
			this.longestString[this.currentNodeDepth] = text;
		}
	}
	this.currentNode = null;
	this.currentNodeDepth = 0;
}

function DOL_addOptionsTextValue() {

	if (this.currentNode == null) {
		this.currentNode = this;
	}
	if (this.currentNode["options"] == null) {
		this.currentNode["options"] = new Array();
	}
	for (var i = 0; i < arguments.length; i++) {
		var text = arguments[i++];
		var value = arguments[i];
		this.addNewOptionToList(this.currentNode.options, text, value, false);
		if (typeof (this.numberOfOptions[this.currentNodeDepth]) == "undefined") {
			this.numberOfOptions[this.currentNodeDepth] = 0;
		}
		if (this.currentNode.options.length > this.numberOfOptions[this.currentNodeDepth]) {
			this.numberOfOptions[this.currentNodeDepth] = this.currentNode.options.length;
		}
		if (typeof (this.longestString[this.currentNodeDepth]) == "undefined" || (text.length > this.longestString[this.currentNodeDepth].length)) {
			this.longestString[this.currentNodeDepth] = text;
		}
	}
	this.currentNode = null;
	this.currentNodeDepth = 0;
	
}

function DOL_child(obj) {
//	var listIndex = this.fieldListIndexes[obj.name];
	var listIndex = this.fieldListIndexes[obj.id];
//	var index = this.fieldIndexes[obj.name];
	var index = this.fieldIndexes[obj.id];
	if (index < (this.fieldNames[listIndex].length - 1)) {
		return this.form[this.fieldNames[listIndex][index + 1]];
	}
	return null;
}

function DOL_setDefaultOptions() {
	if (this.currentNode == null) {
		this.currentNode = this;
	}
	for (var i = 0; i < arguments.length; i++) {
		var o = this.findMatchingOptionInArray(this.currentNode.options, null, arguments[i], false);
		if (o != null) {
			o.defaultSelected = true;
		}
	}
	this.currentNode = null;
}

function DOL_setValues() {

	if (this.currentField == null) {
		alert("Não é possível chamar setValues() sem chamar forField() primeiro!");
//		alert("Can't call setValues() without using forField() first!");
		return;
	}
	if (typeof (this.values[this.currentField]) == "undefined") {
		this.values[this.currentField] = new Object();
	}
	for (var i = 0; i < arguments.length; i++) {
		this.values[this.currentField][arguments[i]] = true;
	}
	this.currentField = null;
}

function DOL_setFormIndex(i) {
	this.formIndex = i;
}

function DOL_setFormName(n) {
	this.formName = n;
}

function DOL_printOptions(name) {

	if ((navigator.appName == "Netscape") && (parseInt(navigator.appVersion) <= 4)) {
		var index = this.fieldIndexes[name];
		var ret = "";
		if (typeof (this.numberOfOptions[index]) != "undefined") {
			for (var i = 0; i < this.numberOfOptions[index]; i++) {
				ret += "<OPTION>";
			}
		}
		ret += "<OPTION>";
		if (typeof (this.longestString[index]) != "undefined") {
			for (var i = 0; i < this.longestString[index].length; i++) {
				ret += "_";
			}
		}
		document.writeln(ret);
	}
}

function DOL_addDependentFields() {
	for (var i = 0; i < arguments.length; i++) {
		this.fieldListIndexes[arguments[i].toString()] = this.fieldNames.length;
		this.fieldIndexes[arguments[i].toString()] = i;
	}
	this.fieldNames[this.fieldNames.length] = arguments;
}

function DOL_change(obj, usePreselected) {
	if (usePreselected == null || typeof (usePreselected) == "undefined") {
		usePreselected = false;
	}
	var changedListIndex = this.fieldListIndexes[obj.name];
	var changedIndex = this.fieldIndexes[obj.name];
	var child = this.child(obj);
	if (child == null) {
		return;
	}
	if (obj.type == "select-one") {
		if (child.options != null) {
			child.options.length = 0;
		}
		if (obj.options != null && obj.options.length > 0 && obj.selectedIndex >= 0) {
			var o = obj.options[obj.selectedIndex];
			this.populateChild(o.DOLOption, child, usePreselected);
			this.selectChildOptions(child, usePreselected);
		}
	} else {
		if (obj.type == "select-multiple") {
			var currentlySelectedOptions = new Array();
			if (!usePreselected) {
				for (var i = 0; i < child.options.length; i++) {
					var co = child.options[i];
					if (co.selected) {
						this.addNewOptionToList(currentlySelectedOptions, co.text, co.value, co.defaultSelected);
					}
				}
			}
			child.options.length = 0;
			if (obj.options != null) {
				var obj_o = obj.options;
				for (var i = 0; i < obj_o.length; i++) {
					if (obj_o[i].selected) {
						this.populateChild(obj_o[i].DOLOption, child, usePreselected);
					}
				}
				var atLeastOneSelected = false;
				if (!usePreselected) {
					for (var i = 0; i < child.options.length; i++) {
						var m = this.findMatchingOptionInArray(currentlySelectedOptions, child.options[i].text, child.options[i].value, true);
						if (m != null) {
							child.options[i].selected = true;
							atLeastOneSelected = true;
						}
					}
				}
				if (!atLeastOneSelected) {
					this.selectChildOptions(child, usePreselected);
				}
			}
		}
	}
	this.change(child, usePreselected);
}

function DOL_populateChild(dolOption, childSelectObj, usePreselected) {

	if (dolOption != null && dolOption.options != null) {
		dolOptionOptionsLength = dolOption.options.length;
		if (childSelectObj.options == null) {
			childSelectObj.options = new Array();
		}
		for (var j = 0; j < dolOptionOptionsLength; j++) {
			var srcOpt = dolOption.options[j];
/*
			var duplicate = false;
			var preSelectedExists = false;
			for (var k = 0; k < childSelectObj.options.length; k++) {
				var csi = childSelectObj.options[k];
				if (csi.text == srcOpt.text && csi.value == srcOpt.value) {
					duplicate = true;
					break;
				}
			}
			if (!duplicate) {
*/
				var newopt = new Option(srcOpt.text, srcOpt.value, false, false);
				newopt.selected = false;
				newopt.defaultSelected = false;
				newopt.DOLOption = srcOpt;
				childSelectObj.options[childSelectObj.options.length] = newopt;
//			}
		}
		childSelectObj.selectedIndex = -1;
	}
}

/*
function DOL_populateChild(dolOption, childSelectObj, usePreselected) {
	alert("DOL_populateChild");
	if (dolOption != null && dolOption.options != null) {
		for (var j = 0; j < dolOption.options.length; j++) {
			var srcOpt = dolOption.options[j];
			if (childSelectObj.options == null) {
				childSelectObj.options = new Array();
			}
			var duplicate = false;
			var preSelectedExists = false;
			for (var k = 0; k < childSelectObj.options.length; k++) {
				var csi = childSelectObj.options[k];
				if (csi.text == srcOpt.text && csi.value == srcOpt.value) {
					duplicate = true;
					break;
				}
			}
			if (!duplicate) {
				var newopt = new Option(srcOpt.text, srcOpt.value, false, false);
				newopt.selected = false;
				newopt.defaultSelected = false;
				newopt.DOLOption = srcOpt;
				childSelectObj.options[childSelectObj.options.length] = newopt;
			}
		}
	}
}
*/
function DOL_selectChildOptions(obj, usePreselected) {
	var values = this.values[obj.name];
	var preselectedExists = false;
	if (usePreselected && values != null && typeof (values) != "undefined") {
		for (var i = 0; i < obj.options.length; i++) {
			var v = obj.options[i].value;
			if (v != null && values[v] != null && typeof (values[v]) != "undefined") {
				preselectedExists = true;
				break;
			}
		}
	}
	var atLeastOneSelected = false;
	for (var i = 0; i < obj.options.length; i++) {
		var o = obj.options[i];
		if (preselectedExists && o.value != null && values[o.value] != null && typeof (values[o.value]) != "undefined") {
			o.selected = true;
			atLeastOneSelected = true;
		} else {
			if (!preselectedExists && o.DOLOption != null && o.DOLOption.defaultSelected) {
				o.selected = true;
				atLeastOneSelected = true;
			} else {
				o.selected = false;
			}
		}
	}
	if (this.selectFirstOption && !atLeastOneSelected && obj.options.length > 0) {
		obj.options[0].selected = true;
	} else {
		if (!atLeastOneSelected && obj.type == "select-one") {
			obj.selectedIndex = -1;
			try{
				document.getElementById('zona').value = '';
			}catch (e) {
				
			}
			
		}
	}
}

/*
	var d = new Date();
	var curr_hour = d.getHours();
	var curr_minute = d.getMinutes();
	var curr_seconds = d.getSeconds();
	alert( curr_hour+":"+curr_minute+":"+curr_seconds );
*/