function getElementsByClass(searchClass,node,tag,idshow) {
	var classElements = new Array();
	if ( node == null )
		node = document;
	if ( tag == null )
		tag = '*';
	var els = node.getElementsByTagName(tag);
	var elsLen = els.length;
	var pattern = new RegExp("(^|\\\\s)"+searchClass+"(\\\\s|$)");
 
	for (i = 0, j = 0; i < elsLen; i++) {
		if ( pattern.test(els[i].className) ) {
			if (els[i].id == idshow)
      {
      els[i].style.display="block";
      var menelem = document.getElementById("men_"+idshow);
      menelem.className="active"; 
       
			} else 
			      {
            
            els[i].style.display="none";
            var menelemid = els[i].id;  
            var menelem1 = document.getElementById("men_"+menelemid); 
            menelem1.className="nonactive"; 
            }
		}
	}
	 
  //return classElements;
}