//	written	by Che de Bruin
//	last updated March 13 2002
//	email:	phatman@phatman.com

var sImageLocation = "\\\\images\\"
var sVisible = 'n';
var activeComboBoxObj = '';
var activeComboRow = 0;
var activeComboRowMin = 0;
var activeComboRowMax = 0;
var browserVersion = 5;				
function comboBox()
{
	sName = arguments[0]||sName;
	activeComboBoxObj = document.getElementById(sName);
	var baseName = activeComboBoxObj.id.replace(/_box/i,'');
	if(sVisible == 'n')
	{
		browserVersion = parseInt(navigator.appVersion.replace(/.*MSIE/,'').replace(/;.*/,''));
		activeComboBoxObj.style.display = '';
		if(browserVersion > 5)
		{
			activeComboBoxObj.focus();
			activeComboRow = 0;
			activeComboRowMin = 0;
			activeComboRowMax = 0;
			activeComboBoxObj.onkeydown = comboScroll;
			if(comboElementExists(baseName+'_'))
				activeComboRowMin = -1;
			activeComboRow = activeComboRowMin;
			var x = 0;
			var elementsExist = true;
			while(elementsExist)
			{
				elementsExist = comboElementExists(baseName+'_'+x);
				if(elementsExist)
				{
					activeComboRowMax = x;
					document.getElementById(baseName+'_'+x).style.backgroundColor='#FFFFFF';
				}
				x++;
			}
			if(activeComboRow >= 0)
				document.getElementById(baseName+'_'+activeComboRow).fireEvent('onmouseover');
			else
				document.getElementById(baseName+'_').fireEvent('onmouseover');
		}
		sVisible = 'y';
			
	}
	else
	{
		document.getElementById(sName).style.display = 'none';
		sVisible = 'n';
		try
		{
			var changeEvent = '';
			changeEvent = document.getElementById(baseName+'_hidden').onchange.toString();
			if(changeEvent != '')
			{
				if(changeEvent.lastIndexOf('function anonymous') > -1)
				{
					changeEvent = changeEvent.replace(/function anonymous\(\)/i,'');
					changeEvent = changeEvent.replace(/\{/,'');
					changeEvent = changeEvent.replace(/\}$/i,'');
				}
				eval(changeEvent);
			}
		}
		catch(e)
		{}
		activeComboBoxObj = '';
		activeComboRow = 0;
		activeComboBoxObj.onkeydown = '';
	}
	return false;
}

function selectComboBox(sField,sValue){
	sField.value = sValue;
	comboBox();
}
			
function rowHightlight(sRow,sColor){
	if(browserVersion > 5)
	{
		try
		{
			if(sColor.toUpperCase() != 'WHITE' && sColor.toUpperCase() != '#FFFFFF')
			{
				document.getElementById(sRow).focus();
				var sName = activeComboBoxObj.id.replace(/_box/i,'');
				document.getElementById(sName+'_'+activeComboRow).style.backgroundColor='#FFFFFF';
				document.getElementById(sRow).style.backgroundColor = sColor;
				//document.getElementById(sName+'_'+parseInt(activeComboRow)).fireEvent('onmouseout');
				activeComboRow = eval('sRow.replace(/'+sName+'_/i,\'\')');
				if(activeComboRow.length == 0)
					activeComboRow = activeComboRowMin;
				activeComboBoxObj.focus();
			}
		}
		catch(e)
		{}
	}
	else
	{
		document.getElementById(sRow).style.backgroundColor = sColor;
	}
}

function init() {
	document.onmousedown = mouseDown
}

function mouseDown(e) {
	if(sVisible == "y" && event.srcElement.id.indexOf(sName.substring(0,sName.length-4))){
		comboBox();
	}
}

function comboScroll()
{
	try
	{
		if(activeComboBoxObj != '')
		{
			var sName = activeComboBoxObj.id.replace(/_box/i,'');
			var currentComboRow = parseInt(activeComboRow);
			if(event.keyCode == 38 && currentComboRow > activeComboRowMin)
			{
				//arrow up key
				if(activeComboRow > 0)
					document.getElementById(sName+'_'+(parseInt(activeComboRow)-1)).fireEvent('onmouseover');
				else
					document.getElementById(sName+'_').fireEvent('onmouseover');
			}
			if(event.keyCode == 40)
			{
				//arrow down key
				document.getElementById(sName+'_'+(parseInt(activeComboRow)+1)).fireEvent('onmouseover');
			}
			if(event.keyCode == 27)
			{
				//esc key
				comboBox();
			}
			if(event.keyCode == 33)
			{
				//page up key
				if(parseInt(activeComboRow)-6 >= activeComboRowMin)
					document.getElementById(sName+'_'+(parseInt(activeComboRow)-6)).fireEvent('onmouseover');
				else
					document.getElementById(sName+'_'+activeComboRowMin).fireEvent('onmouseover');
			}
			if(event.keyCode == 34)
			{
				//page down key
				if(parseInt(activeComboRow)+6 <= activeComboRowMax)
					document.getElementById(sName+'_'+(parseInt(activeComboRow)+6)).fireEvent('onmouseover');
				else
					document.getElementById(sName+'_'+activeComboRowMax).fireEvent('onmouseover');
			}
			if(event.keyCode == 35)
			{
				//end key
				document.getElementById(sName+'_'+activeComboRowMax).fireEvent('onmouseover');
			}
			if(event.keyCode == 36)
			{
				//home key
				if(activeComboRowMin >=0)
					document.getElementById(sName+'_0').fireEvent('onmouseover');
				else
					document.getElementById(sName+'_').fireEvent('onmouseover');
			}
			if(event.keyCode == 13)
			{
				//enter key
				document.getElementById(sName+'_'+parseInt(activeComboRow)).fireEvent('onclick');
				document.getElementById(sName+'_'+parseInt(activeComboRow)).fireEvent('onmousedown');
				document.getElementById(sName+'_'+parseInt(activeComboRow)).fireEvent('onmouseup');
			}
		}
	}
	catch(e)
	{}
}

function comboElementExists(elementID)
{
	try
	{
		var t = document.getElementById(elementID).id;
		return true;
	}
	catch(e)
	{
		return false;
	}
}

function checkFieldLength(obj, size, nextObjName)
{		
	if (obj.value.length == size)
		eval('document.all[\'' + nextObjName + '\'].focus()');
}

init();