1.input:
<inputname="textfield"type="text"value="点击添入标题"onfocus="if (value =='点击添入标题'){value =''}"onblur="if (value ==''){value='点击添入标题'}"/>
2textarea:
<textareaname="textarea"cols="80"rows="17"onfocus="if(value=='正文：'){value=''}"onblur="if (value ==''){value='正文：'}"></textarea>