// Support V1.2
// José Proença
// 2006-01-11

var SupportShowItemIDArray = new Array();
var SupportShowItemTimerArray = new Array();

function SupportShowItemFindIdx(id)
{
	var bFound = false;
	var n = SupportShowItemIDArray.length-1;
	while ((n>=0) && !bFound)
	{
		if (SupportShowItemIDArray[n] == id)
			bFound = true;
		else
			n--;
	}
	if (bFound)
		return n;
	else
		return null;
}

function SupportShowItemOffsetSaveSelect(itemId, placeitemId, xOffSet, yOffSet, show, saveSelects)
{
	var container;
	var bShow;
	var nDelay = 0;

	var nIdx = SupportShowItemFindIdx(itemId + "_" + placeitemId);
	if (nIdx)
		window.clearTimeout(SupportShowItemTimerArray[nIdx]);
	
	if (typeof(show) == "number")
	{
		if (show >= 0)
		{
			bShow = true;
			nDelay = show;
		}
		else
		{
			bShow = false;
			nDelay = -show;
		}	
	}
	else
		bShow = show;

	if (bShow)
		container = document.getElementById(placeitemId);

	var control = document.getElementById(itemId);
	if (control)
	{
		if (container)
		{
			control.style.left = SupportGetAbsoluteLeft(container) + xOffSet;
			control.style.top = SupportGetAbsoluteTop(container) + yOffSet;
		}
		if (nDelay > 0)
		{
  			var nTimer = window.setTimeout("SupportShowItemOffsetSaveSelect('"+itemId+"','"+placeitemId+"',"+xOffSet+","+yOffSet+","+bShow+","+saveSelects+");", nDelay);
			if (nIdx)
				SupportShowItemTimerArray[nIdx] = nTimer;
			else
			{
				SupportShowItemTimerArray[SupportShowItemIDArray.length] = nTimer;
				SupportShowItemIDArray[SupportShowItemIDArray.length] = itemId + "_" + placeitemId;
			}
		}
		else
			control.style.display = bShow ? "block" : "none";

		
		if (saveSelects)
		{
			var bVisibility = bShow ? 'hidden' : 'visible';
			var arrElements=document.getElementsByTagName('select');
			for(var i=0;i<arrElements.length;i++)
				arrElements[i].style.visibility=bVisibility;
		}
	}
}

function SupportShowItemOffset(itemId, placeitemId, xOffSet, yOffSet, show)
{
	return SupportShowItemOffsetSaveSelect(itemId, placeitemId, xOffSet, yOffSet, show, false)
}

function SupportShowItem(itemId, placeitemId, show)
{
	return SupportShowItemOffset(itemId, placeitemId, 0, 0, show);
}


function SupportGetAbsoluteTop(item)
{
	var nTop = 0;
	if (item)
		do
			nTop += item.offsetTop;
		while ((item = item.offsetParent) && ((item.style == null) || (item.currentStyle.position=="static")));
	return (nTop)
}


function SupportGetAbsoluteLeft(item)
{
	var nLeft = 0;
	if (item)
		do
			nLeft += item.offsetLeft;
		while ((item = item.offsetParent) && ((item.style == null) || (item.currentStyle.position=="static")));
	return (nLeft)
}


function SupportValidateRequiredFields(arIDs)
{
	var bValidate = true;
	if (arIDs)
	{
		var control;
		for (n in arIDs)
		{
			if (arIDs[n])
			{
				control = document.getElementById(arIDs[n]);
				bValidate = bValidate && (SupportStringTrim(control.value) != "");
			}
		}
	}
	return bValidate;
}


function SupportStringTrim(strValue)
{
	var strTrimmed = strValue;

	if (strTrimmed)
	{
		if (strTrimmed.length > 0)
			while (strTrimmed.substr(0, 1) == ' ')
				strTrimmed = strTrimmed.substr(1);

		if (strTrimmed.length > 0)
			while (strTrimmed.substr(strTrimmed.length - 1, 1) == ' ')
				strTrimmed = strTrimmed.substr(0, strTrimmed.length - 1);
	}
	return strTrimmed;
}


// Body onload utility (supports multiple onload functions)
// Call the following with your function as the argument: SafeAddOnload(yourfunctioname);

var SupportSafeBodyOnloadFunctions = new Array();

function SupportSafeBodyOnload()
{
	for (var i=0; i < SupportSafeBodyOnloadFunctions.length; i++)
		SupportSafeBodyOnloadFunctions[i]();
}

function SupportSafeAddBodyOnload(f)
{
	isMac = (navigator.appVersion.indexOf("Mac")!=-1) ? true : false;
	IEmac = ((document.all)&&(isMac)) ? true : false;
	IE4 = ((document.all)&&(navigator.appVersion.indexOf("MSIE 4.")!=-1)) ? true : false;

	if (IEmac && IE4)  // IE 4.5 blows out on testing window.onload
	{
		window.onload = SupportSafeBodyOnload;
		SupportSafeBodyOnloadFunctions[SupportSafeBodyOnloadFunctions.length] = f;
	}
	else if  (window.onload)
	{
		if (window.onload != SupportSafeBodyOnload)
		{
			SupportSafeBodyOnloadFunctions[0] = window.onload;
			window.onload = SupportSafeBodyOnload;
		}		
		SupportSafeBodyOnloadFunctions[SupportSafeBodyOnloadFunctions.length] = f;
	}
	else
		window.onload = f;
}