文本框/区域/等水印插件

jQuery ghosttext is a simple, lightweight "ghost text" implementation for textfields, textareas, editable divs, and anything that is editable. It displays the Ghost-Text on the fields, when they are empty and unfocused. When the user clicks or tabs into the field, the Ghost-Text disappears. When the field looses focus or user tabs out and the field is still empty, the Ghost-Text reappears. This plugin uses the fields" title attributes to control the ghost text field. You can pass a custom Ghost-Text color. Usage note $().ghosttext([shadow color:optional]); eg.$("input[type=text]").ghosttext();