var NavCatSelected=new Object();

var NavProcessing=new Object();



function navBlind(itemClicked){

	cat=itemClicked.name;

	selectedid=itemClicked.id;

	showDiv=selectedid+'_div';



	if(!NavProcessing[cat] && NavCatSelected[cat]!==selectedid){

		NavProcessing[cat]=1;

		elements=document.getElementsByTagName('a');



		for(var i = 0; i < elements.length; i++){ 

			if(elements[i].name==cat){

				

				linkid=elements[i].id;

		

				hidediv=document.getElementById(linkid+'_div');

				if(linkid && hidediv && hidediv.style.display=='block'){

					document.getElementById(linkid).checked=false;

					new Effect.BlindUp(hidediv, {duration:.5, queue: 'end' });

				}

			}

		}

		document.getElementById(selectedid).checked=true;

		new Effect.BlindDown(showDiv, {duration:.5, queue: 'end', afterFinish: function(){ NavProcessing[cat]=0; } });

		NavCatSelected[cat]=selectedid;

	}

}