function updateNavLeft(chkBox, link)
{
	num = getLayerNum(chkBox.substring(0,3) + chkBox.substring(6));
	if (!printMap)
	{
		if(link)
			toggleCheck(chkBox);

		if (document.getElementById(chkBox).checked==1)
			layersChecked[num] = true;
		else
			layersChecked[num] = false;

		map.closeInfoWindow();
		removeDefaultMarker();
	}


	if(num == SECURITY_NUM)
		security();
	else if(num == CONSTRUCTION_NUM)
		construction();
}

function updateNavLeftSub(chkBox, link)
{
	var chkBoxName = chkBox.substring(0,6);

	if (!printMap)
	{
		if(link)
			toggleCheck(chkBox);

		var layerNum = getLayerNum(chkBoxName);

		var idNum = getIDnum(chkBox);

		if (document.getElementById(chkBox).checked==1)
			markerEnabledArray[layerNum][idNum]=1;
		else
			markerEnabledArray[layerNum][idNum]=0;

		map.closeInfoWindow();
		removeDefaultMarker();
	}

	if (chkBoxName=='chkSec')
		securityCheck(chkBox);
	else if (chkBoxName=='chkCon')
		construction();

}