// javascript

	function hide_elements(elementids){
		var elems=new Array();
		elems=elementids.split(',');
		var len = elems.length;
		for(i=0;i<len;i++){
			element = document.getElementById(elems[i]);
			element.style.display = 'none';
  		};
	};



function show_elements(elementids){
		var elems=new Array();
		elems=elementids.split(',');
		var len = elems.length;
		for(i=0;i<len;i++){
			element = document.getElementById(elems[i]);
			element.style.display = 'block';
  		};
	};