var staticClasses = new Array();
   function changeClass(id, newClassName, isStatic) {
	  ids = id.split(',');
	  for(i=0;i<ids.length;i++) {
		 if(document.getElementById(ids[i])) {
			if(!this.staticClasses[ids[i]]) document.getElementById(ids[i]).className = newClassName;
			if(isStatic) this.staticClasses[ids[i]] = true;
		 }
	  }
   };