/**
	 * FUNCTIONS FOR SAVING RECORDS
	 */

	/* CALLER REQUIREMENTS:
	set a global js variable called numSavedRecords to the current number of records
	in saved records area. Used to determine when to toggle saved records icon to
	indicate presence of records 

	set a global js variable isTemporarySession (boolean), used to determine whether to
	ajax add a tagging input on save or not. 
	*/
	
	addEvent(window, 'load', addAjaxToSaveLinks);
	
	/**
	 * Add onClick event to save records
	 */
	
	function addAjaxToSaveLinks()
	{
		// add onClick event to save the record
		
		var links = document.getElementsByTagName('a');
		
		for ( i = 0; i < links.length; i++)
		{
			if ( /saveThisRecord/.test(links[i].className) )
			{		
				links[i].onclick = function () {
					return updateRecord(this.id)
				}
			}
		}
	}
	
	/**
	 * legacy function name and parameter list for backwards compatability < 1.3,
	 * should use updateRecord(id) instead
	 */
	
	function saveRecord(groupID,resultSet,recordNumber)
	{
		return updateRecord( "link_" + resultSet + ":" + recordNumber );
	}
	
	/**
	 * Add or delete a record from the user's folder
	 */
	
	function updateRecord( id )
	{		
		var arrID = id.split(/_|:/);
		var resultSet = arrID[1]; 
		var recordNumber = arrID[2];
	
		// Should be set by main page in global js variable, if not we set.
		if (typeof(window["numSavedRecords"]) == "undefined") {
			numSavedRecords = 0;
		}
		
		if (typeof(window["isTemporarySession"]) == "undefined") {
			 isTemporarySession = true;
		}
		
		var url = $(id).readAttribute('href');
		
		// we want an ajax-json response from Xerxes
		
		var base = url.split('?')[0]
		var queryParams = url.toQueryParams();	
		queryParams["format"] = "json";
		url = base + '?' + $H(queryParams).toQueryString();
	
		if ( $(id).hasClassName("disabled")) {
			return false;
		}
		
		// do it! update our icons only after success please! then we're only
		// telling them they have saved a record if they really have! hooray
		// for javascript closures.
		
		var workingText = "Saving...";
		if ( $(id).hasClassName("saved") ) workingText = "Removing...";
		
		$(id).update(workingText);
		$(id).addClassName("disabled");
		
		new Ajax.Request(url, {"onFailure": function(ajaxRequest) {
			alert('Sorry, an error occured, your record was not saved.');
			},
			"onSuccess": function (ajaxRequest) {

			// add tag input form. first need to get saved record id out
			// of ajax response. 
			
			var responseData = ajaxRequest.responseText.evalJSON(true);
			var savedID = responseData.savedRecordID;

			if ( $(id).hasClassName("saved") )
			{
				numSavedRecords--;
				$('folder_' + resultSet + recordNumber).src = "images/folder.gif";
				$(id).update("Save this record");
				$(id).removeClassName("saved");

				// remove label input
				
				var label_input = $('label_' + resultSet + ':' + recordNumber);
				if (label_input) label_input.remove();
			}
			else
			{
				numSavedRecords++;
				$('folder_' + resultSet + recordNumber).src = "images/folder_on.gif";
				$(id).update("Record saved");
				$(id).addClassName("saved");

				// add tag input
				
				if ( ! isTemporarySession && savedID)
				{					
					var input_div = $('template_tag_input').cloneNode(true);
					var new_form = input_div.down('form');
	
					// take the template for a tag input and set it up for this particular
					// record
	
					input_div.id = "label_" + resultSet + ":" + recordNumber; 
					new_form.record.value = savedID;
					new_form.tagsShaddow.id = 'shadow-' + savedID; 
					new_form.tags.id = 'tags-' + savedID;
					
					new_form.tags.onfocus = function () {
						activateButton(this)
					}
					new_form.tags.onkeypress = function () {
						activateButton(this)
					}
					new_form.tags.onblur = function () {
						deactivateButton(this)
					}
	
					new_form.submitButton.id = 'submit-' + savedID;
					new_form.submitButton.disabled = true;
					new_form.onsubmit = function () {
						return updateTags(this);
					}
				
					// add it to the page, now that it's all set up.
					
					var parentBlock = $(id).up('.recordOptions');
					
					if (parentBlock) 
					{
						parentBlock.insert(input_div);
						
						// and add the autocompleter
	
						addAutoCompleterToID(new_form.tags.id);
						input_div.show();
					}
				}
			}
			
			$(id).removeClassName("disabled");
	
			// change master folder image
			
			if ( numSavedRecords > 0 ) {
				$('folder').src = 'images/folder_on.gif';
			}
			else {
				$('folder').src = 'images/folder.gif';
			}
		}
	});	
		return false;
	}
	
	/**
	 * Checks to see if user has selected more databases than is allowed or none
	 *
	 * @note global variable iSearchable set by include.xsl since this is set server-side
	 * @param form1		form submitting the request
	 * @return bool		true if number of selected databases is less, false otherwise
	 */
	
	function databaseLimit(form1)
	{
		var iTotal = 0;
		var iMax = form1.database.length;
		
		if ( iMax == "" || iMax == undefined)
		{
			iMax = 1;
		}
	
		for (var x = 0; x < iMax; x++)
		{
			if (eval("document.forms.form1.database[" + x + "].checked") == true)
			{
				iTotal++;
			}
		}
		
		if ( iTotal == 0 )
		{
			alert("Please select databases to search");
			return false;
		}
		else if ( iTotal > iSearchable )
		{
			alert("Sorry, you can only search up to " + iSearchable + " databases at one time");
			return false;
		}
		else
		{
			return true;
		}
	}
	
	/**
	 * Simple alert message to confirm deletion of saved records
	 *
	 * @param form1		form submitting the request
	 * @return bool		true if number of selected databases is less, false otherwise
	 */
	
	function sureDelete()
	{
		if ( confirm("Are you sure you want to delete this record?") )
		{
			return true;
		}
		else
		{
			return false;
		}
	}
	
	
	function disableExportSelect()
	{
		
	}