var Dfv=new Class({initialize:function(fieldId,defValue){this.fieldId=fieldId;this.defValue=defValue;this.fobj=$(fieldId);this.initFields();this.initEventsHandlers();},initFields:function(){if(this.fobj.value!=this.defValue){if(this.fobj.value==""){this.fobj.value=this.defValue;this.fobj.addClass('dfv');}else{this.fobj.removeClass('dfv');}}else{this.fobj.addClass('dfv');}},initEventsHandlers:function(){var mthis=this;this.fobj.addEvent('focus',function(){if(mthis.fobj.value==mthis.defValue){mthis.fobj.value="";mthis.fobj.removeClass('dfv');}});this.fobj.addEvent('blur',function(){if(mthis.fobj.value==""){mthis.fobj.value=mthis.defValue;mthis.fobj.addClass('dfv');}});}});