menu_status = new Array(); 

function showHide(theid){

	if(document.getElementById(theid)){	
		var switch_id = document.getElementById(theid);

		if(menu_status[theid] != 'show') {
		   switch_id.className = 'show';
		   menu_status[theid] = 'show';
		}else{
		   switch_id.className = 'hide';
		   menu_status[theid] = 'hide';
		}
	}
}