/* preload images objects indicating lefthand nav menu state (right/down arrows).
   objects are used in functions : toggleMenu(); shutOpenMenu(). */
	var imgMenuOpen = new Image(); // for down-arrow image
	var imgMenuShut = new Image(); // for right-arrow image
	
	imgMenuOpen.src = '/MRE/GRAPHICS/goldarrowdown.gif';
	imgMenuShut.src = '/MRE/GRAPHICS/goldarrow.gif';


/*=======================================================================================/
/  toggleMenu : toggles open|shut the lefthand menu divs when user clicks parent link.
/  param: linkID[string]; return: [none]. */
 
function toggleMenu(linkID)
{
  if ((eval("document.getElementById(linkID + '_div') ;" ).style.display)=="block")
  {
	//shutOpenMenu();
	
	eval("document.getElementById(linkID + '_div') ;" ).style.display="none";
    eval("document.getElementById(linkID + '_img') ;" ).src=imgMenuShut.src;
  }
  else
  {
    //shutOpenMenu();
      
    eval("document.getElementById(linkID + '_div') ;" ).style.display="block";
    eval("document.getElementById(linkID + '_img') ;" ).src=imgMenuOpen.src;
  }
  //event.returnValue=0;
}



/*=======================================================================================/
/  shutOpenMenu : shuts all lefthand menu divs. is called from toggleMenu() function.
/  param: [none]; return: [none]. */
 
function shutOpenMenu()
  {
	var strThis = document.location.href;
	
	if(strThis.indexOf('/MRE/') != -1)
	{
		nIndex = 1;
		document.write('nIndex=1');
	}
	else
	{
		nIndex = 0;
		document.write('nIndex=0');
	}

	for (var k=0; k<=nIndex; k++)
	{    
		if (eval("document.getElementById('Link" + k + "_img'); ").src==imgMenuOpen.src)
		{
			eval("document.getElementById('Link" + k + "_div'); ").style.display="none";
			eval("document.getElementById('Link" + k + "_img'); ").src=imgMenuShut.src;
		}
	}
  }



	var WindowName;
	function CloseWindow()
	{
		if(WindowName != null && !WindowName.closed) 
			WindowName.close();
	}
	
	function MM_openBrWindow(theURL,winName,features) 
	{
		CloseWindow();
		WindowName = window.open(theURL,winName,features);
	}