// from main page: open iframe contents in another window
function printer_friendly()
	{
	var oContent = document.getElementById("contentframe");
	if (oContent)
		{
		var oWin = window.open (oContent.src, "_blank", "width=720,resizable=yes,scrollbars=yes");
		if (oWin)
		   {
		   oWin.focus ();
		   oWin.print ();
		   }
		}
	}

// from page in iframe: resize enclosing iframe to fit
function resize_parent()
   {
   var oParent = parent.document.getElementById("contentframe");
   var oChild = document.getElementById("body");
   if (oParent && oChild)
      oParent.height = oChild.scrollHeight;
   }

// from page in iframe: to navigate directly to another
function navigate_iframe(strUrl, oMainDocument)
   {
	var strSearch = strUrl;
	var nExtension = strSearch.indexOf (".htm");
	if (nExtension >= 0)
		strSearch = strSearch.substring (0, nExtension);
	if (strSearch.length <= 0)
		strSearch = "Home";
   if (oMainDocument == undefined)
      oMainDocument = parent.document;

	oMainDocument.title = "Boston Malacological Club - " + strSearch;
   var oFrame = oMainDocument.getElementById("contentframe");
   oFrame.src = strSearch + ".htm";
   }