var _StyleUtils = new StyleUtils();
function StyleUtils() {

   this.addClass = function(element, className) {
     this.removeClass(element, className);
 		 if (element.className)
	     element.className += ' ' + className;
	    else
        element.className = className
   }

   this.removeClass = function (element, className) {
   	var newClassName = '';
		if (element && element.className) {
	    var a = element.className.split(' ');
  	  for (var i = 0; i < a.length; i++) {
         if (a[i] != className) {
           if (i > 0)
             newClassName += ' ';
    	     newClassName += a[i];
      	 }
      }
      element.className = newClassName;
		}
	 }

}