function writePermanentCookie(cookieName, cookieValue) {
  document.cookie = escape(cookieName) + "=" + escape(cookieValue) + "; path=/; expires=Mon, 01-Jan-3000 00:00:00 GMT;";
  return true;
}

function writeSessionCookie(cookieName, cookieValue) {
  if (testSessionCookie()) {
    document.cookie = escape(cookieName) + "=" + escape(cookieValue) + "; path=/";
    return true;
  }
  else return false;
}

function getCookieValue(cookieName) {
  var exp = new RegExp (escape(cookieName) + "=([^;]+)");
  if (exp.test (document.cookie + ";")) {
    exp.exec (document.cookie + ";");
    return unescape(RegExp.$1);
  }
  else return false;
}

function testSessionCookie() {
  return true;
}


function SetFormControlsState(aFormId,aAffectedClass,aState)
{
  updatedForm = document.getElementById(aFormId);
  for(elementIndex=0;elementIndex < updatedForm.elements.length;elementIndex++) {
    currentFormElement = updatedForm.elements.item(elementIndex);
    if (currentFormElement.id != "inheritControl" && currentFormElement.type != "submit") {
      if (aAffectedClass == "anyClass") {
        currentFormElement.disabled = aState;
      }
      else {
        if (currentFormElement.className == aAffectedClass) {
          currentFormElement.disabled = aState;
        }
      }
    }
  }
}

function SetFormControlsState(aFormId,aAffectedClass,aProtectedClass,aState)
{
  updatedForm = document.getElementById(aFormId);
  for(elementIndex=0;elementIndex < updatedForm.elements.length;elementIndex++) {
    currentFormElement = updatedForm.elements.item(elementIndex);
    if (currentFormElement.className != aProtectedClass) {
      if (aAffectedClass == "anyClass") {
        currentFormElement.disabled = aState;
      }
      else {
        if (currentFormElement.className == aAffectedClass) {
          currentFormElement.disabled = aState;
        }
      }
    }
  }
}


function SetIdVisibility(id,bVisible) {
  if (bVisible) {
	  document.getElementById(id).style.display = "";
  }
	else {
	  document.getElementById(id).style.display = "none";
  }
}

function resize()
{
	var leftDiv = document.getElementById('leftcolumn');
	var scrollBarDiv = document.getElementById('scrollbar');
	var topDiv = document.getElementById('outerheader');
	var footerDiv = document.getElementById('footer');
	var centerDiv = document.getElementById('mainconfigwithleftcolumn');
	var mainDiv = document.getElementById('maincontent');
	var navbarDiv = document.getElementById('navbarctrl');

	if (leftDiv && scrollBarDiv) {
		var h = footerDiv.offsetTop - topDiv.offsetHeight;
		if (h > 0) {
			leftDiv.style.height = h + "px";
			scrollBarDiv.style.height = h + "px";
		}
	}

	// Mostly to fix IE.
	if (centerDiv) {
		var h = footerDiv.offsetTop - topDiv.offsetHeight;
		if (h > 0) {
			centerDiv.style.height = h + "px";
		}

		centerDiv.style.position = "absolute";
		centerDiv.style.overflow = "auto";

		centerDiv.style.left = leftDiv.offsetWidth + "px";

		var w = document.body.clientWidth - leftDiv.offsetWidth;
		if (w > 0) {
			centerDiv.style.width =  w + "px";
		}
	}

}

function setBackground() {
	var useBackground = getCookieValue("WebUseBackground");
	if (useBackground == 1) {
		var backgroundURL = getCookieValue("WebBackgroundURL");
		if (backgroundURL) {
			var mainDiv = document.getElementById('maincontent');
			var topDiv = document.getElementById('outerheader');
			var footerDiv = document.getElementById('footer');
			var navbarDiv = document.getElementById('navbarctrl');
			if (mainDiv && topDiv && footerDiv && navbarDiv) {
				var newHeight = footerDiv.offsetTop - topDiv.offsetHeight - navbarDiv.offsetHeight;
				for (var i = 0; i < mainDiv.childNodes.length; i++) {
					var child = mainDiv.childNodes[i];
					if (child.nodeName == 'TABLE') {
						child.style.height = newHeight + 'px';
						child.style.backgroundImage = 'url(' + backgroundURL + ')';
						child.style.backgroundPosition = 'center top';
						break;
					}
				}
			}
			var mainconfigDiv = document.getElementById('mainconfigwithleftcolumn');
			if (mainconfigDiv) {
				mainconfigDiv.style.backgroundImage = 'url(' + backgroundURL + ')';
				mainconfigDiv.style.backgroundPosition = 'center';
			}
		}
	}
}


var dynBlockRemoveFromCookie = 1;
var dynBlockAddToCookie = 2;

function updateDynBlockCookie(aTag,aClass,aOperation) {
	var blockID = aClass;
	var oldDynBlockState = getCookieValue("dynblockstate");
	var newDynBlockState = '';

	if (typeof(oldDynBlockState) != 'string') {
		oldDynBlockState = '';
	}

	var	newArray = new Array;
	switch(aOperation) {
		case dynBlockRemoveFromCookie: {
				newArray = oldDynBlockState.split(' ').without(blockID);
				newDynBlockState = newArray.join(" ");
			}
			break;

			case dynBlockAddToCookie: {
				newArray = oldDynBlockState.split(' ').without(blockID);
				if (newArray.length == 1 && newArray[0] == "") {
					newArray[0] = blockID;
				}
				else {
					newArray[newArray.length] = blockID;
				}
				newDynBlockState = newArray.join(" ");
			}
			break;
	}

	writePermanentCookie("dynblockstate",newDynBlockState);
}

function toggleDynamicBlock(aSpanObject,aTag,aClass) {
	var selectorString = aTag + ".hidable." + aClass;
	var togglingOn = aSpanObject.hasClassName('closed');

	aSpanObject.toggleClassName('closed');
	$$(selectorString).invoke('toggleClassName','closed');
	/* We remember in the cookie which sections are opened.  All the others are implicitly closed. */
	if (togglingOn) {
		updateDynBlockCookie(aTag,aClass,dynBlockAddToCookie);
	}
	else {
		updateDynBlockCookie(aTag,aClass,dynBlockRemoveFromCookie);
	}
}

function applyDynBlockCookie() {
	var dynBlockHeaderList = $$('span.spanDynBlockHeader');
	var dynBlockState = getCookieValue('dynblockstate');
	var cookieStateArray;

	if (dynBlockState) {
		cookieStateArray = dynBlockState.split(' ');

		var classNameIsInCookieStateArray = function (aPageDynBlockClassName) { return cookieStateArray.include(aPageDynBlockClassName); }
		var openedBlocksFinder = function(aDynBlockHeader) { return aDynBlockHeader.classNames().any(classNameIsInCookieStateArray);	}

		var openedBlocks = dynBlockHeaderList.findAll(openedBlocksFinder);
		if (openedBlocks) {
			openedBlocks.invoke('onclick');
		}
	}
}


window.onresize = resize;
addLoadEvent(resize);
addLoadEvent(setBackground);
addLoadEvent(applyDynBlockCookie);

try {
	document.execCommand("BackgroundImageCache",false,true);
} catch(e) {}