asp.net ajax labrary 链接
http://www.asp.net/ajaxlibrary/act.ashx?From=MainPage
asp.net Ajax Control Toolkit
http://ajaxcontroltoolkit.codeplex.com/
JQuery
JQuery watermark插件
http://code.google.com/p/jquery-watermark/
JQuery UI插件
asp.net ajax labrary 链接
http://www.asp.net/ajaxlibrary/act.ashx?From=MainPage
asp.net Ajax Control Toolkit
http://ajaxcontroltoolkit.codeplex.com/
JQuery
JQuery watermark插件
http://code.google.com/p/jquery-watermark/
JQuery UI插件