M.block_timetable = M.block_timetable || {};

M.block_timetable.helper = {
		gY: null,


		 /**
		  *      * @param Y the YUI object
		  *           * @param opts an array of options
		  *                */
	    init: function(Y,opts) {
		        	
		        	M.block_timetable.helper.gY = Y;
		        	console.log(opts['someinstancesetting']);
		        
		        }
};

M.block_timetable.view_subject = function() {
		      var cols = document.getElementsByClassName('timetable_view_subject');
		      for(i = 0; i < cols.length; i++) {
			          cols[i].style.display = 'table';
			        }
		      cols = document.getElementsByClassName('timetable_view_room');
		      for(i = 0; i < cols.length; i++) {
			          cols[i].style.display = 'none';
			        }
		      cols = document.getElementsByClassName('timetable_view_teacher');
		      for(i = 0; i < cols.length; i++) {
			          cols[i].style.display = 'none';
			        }
		      cols = document.getElementsByClassName('timetable_view_class');
		      for(i = 0; i < cols.length; i++) {
			          cols[i].style.display = 'none';
			        }
};

M.block_timetable.view_teacher = function() {
		      var cols = document.getElementsByClassName('timetable_view_subject');
		      for(i = 0; i < cols.length; i++) {
			          cols[i].style.display = 'none';
			        }
		      cols = document.getElementsByClassName('timetable_view_room');
		      for(i = 0; i < cols.length; i++) {
			          cols[i].style.display = 'none';
			        }
		      cols = document.getElementsByClassName('timetable_view_teacher');
		      for(i = 0; i < cols.length; i++) {
			          cols[i].style.display = 'table';
			        }
		      cols = document.getElementsByClassName('timetable_view_class');
		      for(i = 0; i < cols.length; i++) {
			          cols[i].style.display = 'none';
			        }
};

M.block_timetable.view_room = function() {
		      var cols = document.getElementsByClassName('timetable_view_subject');
		      for(i = 0; i < cols.length; i++) {
			          cols[i].style.display = 'none';
			        }
		      cols = document.getElementsByClassName('timetable_view_room');
		      for(i = 0; i < cols.length; i++) {
			          cols[i].style.display = 'table';
			        }
		      cols = document.getElementsByClassName('timetable_view_teacher');
		      for(i = 0; i < cols.length; i++) {
			          cols[i].style.display = 'none';
			        }
		      cols = document.getElementsByClassName('timetable_view_class');
		      for(i = 0; i < cols.length; i++) {
			          cols[i].style.display = 'none';
			        }
};

M.block_timetable.view_class = function() {
		      var cols = document.getElementsByClassName('timetable_view_subject');
		      for(i = 0; i < cols.length; i++) {
			          cols[i].style.display = 'none';
			        }
		      cols = document.getElementsByClassName('timetable_view_room');
		      for(i = 0; i < cols.length; i++) {
			          cols[i].style.display = 'none';
			        }
		      cols = document.getElementsByClassName('timetable_view_teacher');
		      for(i = 0; i < cols.length; i++) {
			          cols[i].style.display = 'none';
			        }
		      cols = document.getElementsByClassName('timetable_view_class');
		      for(i = 0; i < cols.length; i++) {
			          cols[i].style.display = 'table';
			        }
};