文本框样式默认文本

有两种方法：

Html代码如下：

 1 "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 2 "http://www.w3.org/1999/xhtml">
 3 
 4 "Content-Type" content="text/html; charset=gb2312" />
 5 
 6 
 7 
 8 
 9 

10   "search-keywords">
11   "text" name="keyword" id="keyword" size="40" onclick="if(value==defaultValue){value='';this.style.color='#333'}" onBlur=     "if(!value){value=defaultValue;this.style.color='#ccc'}" value="输入产品，公司名称查找公司，" style="font-family:微软雅黑;"/>
12   
13      "search-put">"submit" value="搜索" />
14      
15      
16      
"form1" name="form1" method="post" action=""> 
17       
18      "textfield" type="text" size="36" id="textfield" value="Dreamweaver" onmouseover="this.style.borderColor='#FF6600'" onmouseout="this.style.borderColor=''" onFocus="if (value =='Dreamweaver'){value =''}" onBlur="if (value ==''){value='Dreamweaver'}"/> 
19      "search-put">"submit" value="搜索" />
20      
21      
 
22 
23 
24 

JS代码如下：

<script language="javascript" type="text/javascript">
function newgetSearch(obj) {
    alert(obj)
    var kid = "keyword";
    var fid = "frm";
    var tid = "language_compsearch"
    
    if (StringTrim($("#" + kid).val()) == "" || $("#" + kid).val() == "输入产品，公司名称查找公司!") {
        myalert("请输入关键字");        
        return false;
    }
    else {
        var l = $("#" + tid).val();
        var url = "/";
        var str = StringTrim(obj.replace(/[^a-z0-9]+/gi,' '));   
        if(str == ""){ 
            myalert("输入产品，公司名称查找公司!");        
            return false;        
        } 
        $("form[name='" + fid + "']").attr("action", url);
        return true;
    }
}
</script>