function toggleGroups(selectedGroupId){
		for(i=1; i<=groupCount; i++){
			if(i != selectedGroupId){
				$("group_" + groupsArray[i]).style.display = "none";
				$("blokHeader_group_" + groupsArray[i]).title = "Click to show this group";
			}
			else{
				$("group_" + groupsArray[i]).style.display = "";
				$("blokHeader_group_" + groupsArray[i]).title = "Click to hide this group";
			}
		}
	}