var lastCtrlTime = 0;
var lastQTime = 0;
var isCtrl = false;
var isKeyQ = false;

/* ########### */
/*  utilities  */
/* ########### */

function getSelectedRadio(buttonGroup)
{
    // returns the array number of the selected radio button or -1 if no button is selected
    if (buttonGroup[0])
    { // if the button group is an array (one button is not an array)
	for (var i=0; i<buttonGroup.length; i++)
	{
	    if (buttonGroup[i].checked)
	    {
		return buttonGroup[i].value;
	    }
	}
    }
    else
    {
	if (buttonGroup.checked)
	{
	    return buttonGroup.value;
	} // if the one button is checked, return zero
    }
    // if we get to this point, no radio button is selected
    return -1;
} // Ends the "getSelectedRadio" function

function getSelectedCheckbox(buttonGroup)
{
    // Go through all the check boxes. return an array of all the ones
    // that are selected (their position numbers). if no boxes were checked,
    // returned array will be empty (length will be zero)
    var retArr = new Array();
    var lastElement = 0;

    if (buttonGroup[0])
    { // if the button group is an array (one check box is not an array)
	for (var i=0; i<buttonGroup.length; i++)
	{
	    if (buttonGroup[i].checked)
	    {
		retArr.length = lastElement;
		retArr[lastElement] = i;
		lastElement++;
	    }
	}
    }
    else
    { // There is only one check box (it's not an array)
	if (buttonGroup.checked)
	{ // if the one check box is checked
	    retArr.length = lastElement;
	    retArr[lastElement] = 0; // return zero as the only array value
	}
    }
    
    return retArr;
}

function getSelectedCheckboxValue(buttonGroup)
{
    // return an array of values selected in the check box group. if no boxes
    // were checked, returned array will be empty (length will be zero)
    var retArr = new Array(); // set up empty array for the return values
    var selectedItems = getSelectedCheckbox(buttonGroup);

    if (selectedItems.length != 0)
    { // if there was something selected
	retArr.length = selectedItems.length;

	for (var i=0; i<selectedItems.length; i++)
	{
	    if (buttonGroup[selectedItems[i]])
	    { // Make sure it's an array
		retArr[i] = buttonGroup[selectedItems[i]].value;
	    }
	    else
	    { // It's not an array (there's just one check box and it's selected)
		retArr[i] = buttonGroup.value;// return that value
	    }
	}
    }

    return retArr;
}

function uncheckAllCheckbox(elementName)
{
    buttonGroup = document.getElementsByName(elementName);
    
    if (buttonGroup[0])
    {
	for (var i=0; i<buttonGroup.length; i++)
	{
	    buttonGroup[i].checked = false;
	}
    }
    else
    { // There is only one check box (it's not an array)
	buttonGroup.checked = false;
    }
}

function getComboVal(combo)
{
    return $(combo).options[$(combo).selectedIndex].value;
}

function loadExternalFile(fileName, fileType, fileId)
{
    var check = checkFileAlreadyLoaded(fileId);

    if(!check)
    {
	var fileRef;

	if (fileType == "js")//if filename is a external JavaScript file
	{
	    fileRef = document.createElement('script');
	    fileRef.setAttribute("type", "text/javascript");
	    fileRef.setAttribute("src", fileName);
	    fileRef.setAttribute("id", fileId);
	}
	else if (fileType == "css")//if filename is an external CSS file
	{
	    fileRef = document.createElement("link");
	    fileRef.setAttribute("rel", "stylesheet");
	    fileRef.setAttribute("type", "text/css");
	    fileRef.setAttribute("href", fileName);
	    fileRef.setAttribute("id", fileId);
	}

	$('head').appendChild(fileRef);

	return true;
    }
    else
    {
	return false;
    }
}

function checkFileAlreadyLoaded(fileId)
{
    var child = $('head').childElements();
    var type;

    for(var i=0;i<child.length;i++)
    {
	type = child[i].readAttribute('type');

	if(type == "text/javascript")
	{
	    if(child[i].readAttribute('id') == fileId)
	    {
		return true;
	    }
	}
	else if(type == "text/css")
	{
	    if(child[i].readAttribute('id') == fileId)
	    {
		return true;
	    }
	}
    }

    return false;//if file is not loaded
}

function checkEnterPressed(e)
{
    if(window.event) // IE
    {
	keynum = e.keyCode;
    }
    else if(e.which) // Netscape/Firefox/Opera
    {
	keynum = e.which;
    }

    if(keynum == Event.KEY_RETURN)
    {
	return true;
    }
    else
    {
	return false;
    }
}

function checkControlEnterPressed(e)
{
    var currentTime = new Date();
    var current = currentTime.getTime();

    if(window.event) // IE
    {
	keynum = e.keyCode;
    }
    else if(e.which) // Netscape/Firefox/Opera
    {
	keynum = e.which;
    }

    if(keynum == 17)
    {
	isCtrl = true;
	lastCtrlTime = current;
    }
    else if(keynum == Event.KEY_RETURN)
    {
	isKeyQ = true;
	lastQTime = current;
    }
    else
    {
	isCtrl = false;
	isKeyQ = false;
    }

    if(isCtrl && isKeyQ)
    {
	if((lastQTime > 0) && (lastCtrlTime > 0))
	{
	    var difference = lastQTime - lastCtrlTime;

	    if((difference < 1000) && (difference > 0))
	    {
		return true;
	    }
	}
    }

    return false;
}

function checkEscapePressed(e)
{
    if(window.event) // IE
    {
	keynum = e.keyCode;
    }
    else if(e.which) // Netscape/Firefox/Opera
    {
	keynum = e.which;
    }

    if(keynum == Event.KEY_ESC)
    {
	return true;
    }
    else
    {
	return false;
    }
}

function e(s)
{
    return encodeURIComponent(s);
}

function d(s)
{
    return decodeURIComponent(s);
}

function loadToggle(con, action, params)
{
    if($(con).visible())
    {
	$(con).hide();
    }
    else
    {
	$(con).show();

	if($(con).innerHTML == '')
	{
	    getSSContent(con, action, params);
	}
    }
}

function timeChooserAcco(hrComboId, minComboId)
{
    if(getComboVal(hrComboId) == "24")
    {
	$(minComboId).options[1].hide();
	$(minComboId).selectedIndex = 0;
    }
    else
    {
	$(minComboId).options[1].show();
    }
}

function replaceTextWithInput(conText, conInput)
{
    $(conText).hide();
    $(conInput).show();
    $(conInput).focus();
    $(conInput).select();
}

function replaceInputWithText(conText, conInput)
{
    $(conText).innerHTML = $F(conInput);
    $(conText).show();
    $(conInput).hide();
}