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.fieldNames = new Array();
	this.fieldListIndexes = new Object();
	this.fieldIndexes = new Object();	
	this.numberOfOptions = new Array();
	this.longestString = new Array();	
	this.values = new Object();
	this.forValue = DOL_forValue;
	this.forX = DOL_forX;	
	this.addOptionsTextValue = DOL_addOptionsTextValue;
	this.setDefaultOptions = DOL_setDefaultOptions;
	this.printOptions = DOL_printOptions;
	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_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_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_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_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;}}