function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.0
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && document.getElementById) x=document.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}


/**
 * Displays an confirmation box (use before delete actions).
 * This function is called while clicking links, for example:
 *
 * @param   object   the link
 * @param   object   the warning message
 *
 * @return  boolean  whether to run the query or not
 */
function confirmLink(theLink, theMessage)
{

    var is_confirmed = confirm(theMessage);
    if (is_confirmed)
    {
        theLink.href += '&is_js_confirmed=1';
    }
    return is_confirmed;
} // end function


/**
 * Flips the display status of an element by either removing it if it is displayed, or displaying it if it was removed.
 * This function is called while clicking on links or checking boxes:
 *
 * @param   object   the id of the element
 *
 */
function change_visibility(nr)
{
	if (document.layers)
	{
		current = (document.layers[nr].display == 'none') ? 'block' : 'none';
		document.layers[nr].display = current;
	}
	else if (document.all)
	{
    	if (document.all[nr])
        {
			current = (document.all[nr].style.display == 'none') ? 'block' : 'none';
			document.all[nr].style.display = current;
        }
	}
	else if (document.getElementById)
	{
		visibility_status = (document.getElementById(nr).style.display == 'none') ? 'block' : 'none';
		document.getElementById(nr).style.display = visibility_status;
	}
} // end function


function rightString(fullString, subString) {
   if (fullString.indexOf(subString) == -1) {
      return "";
   } else {
      return (fullString.substring(fullString.indexOf(subString)+subString.length, fullString.length));
   }
}


function rightBackString(fullString, subString) {
   if (fullString.lastIndexOf(subString) == -1) {
      return "";
   } else {
      return fullString.substring(fullString.lastIndexOf(subString)+1, fullString.length);
   }
}


function middleString(fullString, startString, endString) {
   if (fullString.indexOf(startString) == -1) {
      return "";
   } else {
      var sub = fullString.substring(fullString.indexOf(startString)+startString.length, fullString.length);
      if (sub.indexOf(endString) == -1) {
         return sub;
      } else {
         return (sub.substring(0, sub.indexOf(endString)));
      }
   }
}

function middleBackString(fullString, startString, endString) {
   if (fullString.lastIndexOf(startString) == -1) {
      return "";
   } else {
      var sub = fullString.substring(0, fullString.lastIndexOf(startString));
      if (sub.indexOf(endString) == -1) {
         return sub;
      } else {
         return (sub.substring(sub.indexOf(endString)+endString.length, sub.length));
      }
   }
}


function leftString(fullString, subString) {
   if (fullString.indexOf(subString) == -1) {
      return "";
   } else {
      return (fullString.substring(0, fullString.indexOf(subString)));
   }
}


function leftBackString(fullString, subString) {
   if (fullString.lastIndexOf(subString) == -1) {
      return "";
   } else {
      return fullString.substring(0, fullString.lastIndexOf(subString));
   }
}



/**
 * Flips the display status of an element by either removing it if it is displayed, or displaying it if it was removed.
 * This function is called while clicking on links or checking boxes:
 *
 * @param   object   the id of the element
 *
 */
function PP_swap_image(nr)
{
	var imgnr = ('img_' + nr);

	if (document.getElementById)
	{
    	if (old_image = (document.getElementById(imgnr).src))
        {
        	old_image = rightString(old_image, 'images/cms/');
			if (old_image == 'menu_tee_minus.gif')
	        {
			    new_image = new Image();
	        	new_image.src = 'images/cms/menu_tee_plus.gif';
	        }
			else if (old_image == 'menu_tee_plus.gif')
	        {
			    new_image = new Image();
	        	new_image.src = 'images/cms/menu_tee_minus.gif';
	        }
			else
	        {
			    new_image = new Image();
	        	new_image.src = 'images/cms/menu_tee.gif';
	        }
			document.getElementById(imgnr).src = new_image.src;
        }
    }

} // end function