tabClicked = function(owner, tabId) 
{
	for (var i = 1; i < 5; i++)
	{
		//find objects		
		var tab = null; 
		var content = null;
		
		if (document.getElementById)
		{
			tab = document.getElementById(owner + "_tab" + i);
			content = document.getElementById(owner + "_content" + i);
		} 
		else if (document.all) // ie 7
		{
			tab = document.all[owner + "_tab" + i];
			content = document.all[owner + "_content" + i];
		}
	
		//determine css class names
		var tabClass = "";
		var contentClass = "tabbertabhide"
		
		if (i == tabId)
		{
			tabClass = "tabberactive";
			contentClass = "tabbertab";
		}	
		
		//set class names if objects exists
		if (tab != null) 
		{
			tab.className = tabClass;
		}	
		
		if (content != null)
		{
			content.className = contentClass;
		}
	}
	
	return false;
}