Index: trunk/kernel/admin_templates/incs/catalog.js
===================================================================
diff -u -r5002 -r5005
--- trunk/kernel/admin_templates/incs/catalog.js	(.../catalog.js)	(revision 5002)
+++ trunk/kernel/admin_templates/incs/catalog.js	(.../catalog.js)	(revision 5005)
@@ -75,31 +75,30 @@
 
 
 Catalog.prototype.switchTab = function($prefix) {
-	alert('switch tab called ['+$prefix+'/'+this.ActivePrefix+']');
 	if (!isset($prefix)) $prefix = this.ActivePrefix;
-		
-	var $cat_id = get_hidden_field('m_cat_id');
-	var $div_id = this.queryTabRegistry('prefix', $prefix, 'tab_id') + '_div';
-	var $tab_cat_id = document.getElementById($div_id).getAttribute('category_id');
 	
-	if ((this.ActivePrefix == $prefix && $cat_id == $tab_cat_id) || (this.TabRegistry.length == 1)) {
-		// clicked on current tab  + same category || no item tabs = do nothing
-		alert('problems in switchtab, prefix: '+$prefix+'; cat_id: '+$cat_id+'; tab_cat_id:'+$tab_cat_id);
-		return true;
-	}
-	
-	// switch tab
-	if (this.ActivePrefix) {
+	if (this.ActivePrefix != $prefix) {
+		// hide source tab
 		document.getElementById(this.ActivePrefix + '_tab').className = 'catalog-tab-unselected';
+		document.getElementById(this.queryTabRegistry('prefix', this.ActivePrefix, 'tab_id') + '_div').style.display = 'none';
 	}
+	
+	// show destination tab
 	this.ActivePrefix = $prefix;
 	document.getElementById(this.ActivePrefix + '_tab').className = 'catalog-tab-selected';
-	
-	// query tab content
-	var $url = this.URLMask.replace('#TEMPLATE_NAME#', this.queryTabRegistry('prefix', $prefix, 'module_path') + '/catalog_tab');
-	$url = $url.replace('#CATEGORY_ID#', $cat_id);
-	
-	Request.makeRequest($url, this.BusyRequest, $div_id, this.successCallback, this.errorCallback, $div_id);			
+	var $div_id = this.queryTabRegistry('prefix', $prefix, 'tab_id') + '_div'; // destination tab
+	document.getElementById($div_id).style.display = 'block';
+		
+	// this.TabRegistry.length == 1
+	var $cat_id = get_hidden_field('m_cat_id');
+	var $tab_cat_id = document.getElementById($div_id).getAttribute('category_id');
+	if ($cat_id != $tab_cat_id) {
+		// query tab content only in case if not queried or category don't match
+		var $url = this.URLMask.replace('#TEMPLATE_NAME#', this.queryTabRegistry('prefix', $prefix, 'module_path') + '/catalog_tab');
+		$url = $url.replace('#CATEGORY_ID#', $cat_id);
+		
+		Request.makeRequest($url, this.BusyRequest, $div_id, this.successCallback, this.errorCallback, $div_id);			
+	}
 }
 
 // adds information about tab to tab_registry
@@ -111,6 +110,7 @@
 	this.TabRegistry[$index]['prefix'] = $tab.getAttribute('prefix');
 	this.TabRegistry[$index]['module_path'] = $tab.getAttribute('edit_template').substring(0, $tab.getAttribute('edit_template').indexOf('/'));
 	this.TabRegistry[$index]['edit_template'] = $tab.getAttribute('edit_template');
+	this.TabRegistry[$index]['index'] = $index;
 }
 
 // allows to get any information about tab
@@ -124,4 +124,24 @@
 		$i++;
 	}
 	return false;
+}
+
+Catalog.prototype.HideTab = function($prefix) {
+	
+	var $tab = document.getElementById($prefix + '_tab_container');
+	if ($tab) {
+		$tab.style.display = 'none';
+		var $index = this.queryTabRegistry('prefix', $prefix, 'index'); // index of hidden tab
+		if ($index + 1 < this.TabRegistry.length) {
+			// some tabs exists after hidden tab
+			this.ShowTab(this.queryTabRegistry('index', $index + 1, 'prefix'));
+		}
+	}
+}
+
+Catalog.prototype.ShowTab = function($prefix) {
+	var $tab = document.getElementById($prefix + '_tab_container');
+	if ($tab) {
+		$tab.style.display = 'block';
+	}
 }
\ No newline at end of file