/*===================================================================
 Author: Matt Kruse
 
 View documentation, examples, and source code at:
     http://www.JavascriptToolbox.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 the web site address is kept.

 This code may NOT be distributed for download from script sites, 
 open source CDs or sites, or any other distribution method. If you
 wish you share this code with others, please direct them to the 
 web site above.
 
 Pleae do not link directly to the .js files on the server above. Copy
 the files to your own server for use with your site or webapp.
 ===================================================================*/
var dynamicOptionListCount=0;var dynamicOptionListObjects = new Array();
function initDynamicOptionLists(){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("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 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(selObj.onchange==null){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.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 = true;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(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 index = this.fieldIndexes[obj.name];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("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){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;}}