style="width:128px; height:20px; background:#d7d7d7;
border:0px; padding:0px 5px; line-height:20px;"
onfocus="if(this.value=='请输入关键字')this.value='';"
onblur="if(this.value=='')this.value='请输入关键字';"
/>
| <script type="text/javascript"> | |
| function shaofeng() | |
| { | |
| var q=document.getElementById("q").value; | |
| if(q==""||q==null||q=='请输入关键字') | |
| { | |
| alert("搜索内容不能为空！"); | |
| return false; | |
| }else{ | |
| return true; | |
| } | |
| } | |
| </script> |