<input type="text" name="account" value='输入关键字' onFocus="if(this.value=='输入关键字'){this.value=''}" onblur="if(this.value==''){this.value='输入关键字'}"/>
<input type="text" name="account" value='输入关键字' onFocus="if(this.value=='输入关键字'){this.value=''}" onblur="if(this.value==''){this.value='输入关键字'}"/>