var arrayID = new Array();

function ctrlMenu(idName){

	if(arrayID[idName]=="1"){
		noneLayer(idName);
		arrayID[idName]="0";
	}else{
		blockLayer(idName);
		arrayID[idName]="1";
	}

}

function blockLayer(idName){

	if ( document.getElementById )
		document.getElementById( idName ).style.display   = 'block' 
	else if ( document.all ) document.all( idName ).style.display = 'block' 

}

function noneLayer(idName){

	if ( document.getElementById )
		document.getElementById( idName ).style.display   = 'none' 
	else if ( document.all ) document.all( idName ).style.display = 'none' 

}