Event.addBehavior({
  '.autocomplete-tag' : function() {
		new_div_name = this.id + '_auto_complete';
		auto_complete_div = new Element('div',{id: new_div_name, style:'display:none;', className: 'autocomplete'});
		this.insert({after: auto_complete_div });
		new Ajax.Autocompleter(this,new_div_name,'/tags/autocomplete',{paramName: 'tag', tokens: [' ',';','.','_',',','\n']});
	}
});