当点到文字2后，点搜索，是弹窗行式target=_blank,要在JS里添加什么语句呀？求解

当点到文字2后，点搜索，是弹窗行式target=_blank,要在JS里添加什么语句呀？求解<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<style type="text/css">
<!--
/* --整体-- */
body {
    margin-left: 0px;
    margin-top: 0px;
    margin-right: 0px;
    margin-bottom: 0px;
    background-color: #dfd3b9;
    background-repeat: repeat-x;
    font-family:"宋体",Verdana, Helvetica, sans-serif;
    font-size: 12px;
    color: #000;
}
div, ul, li, ol, form, h1, h2, h3, h4, h5, h6, h7, img,p { margin: 0px; padding: 0px; list-style: none; }
img{border:0 none;} 
a {
    font-size: 12px;
    color: #000000;
}
a:link {
    text-decoration: none;
}
a:visited {
    text-decoration: none;
    color: #000000;
}
a:hover {
    text-decoration: underline;
    color: #000000;
}
a:active {
    text-decoration: none;
    color: #000000;
}
/* -- 头部 -- */
.top{ width:970px; height:132px;}
.top .logo{ width:233px; height:120px; float:left;}
.top .con{ width:730px; height:120px; float:right;}
.top .con .lc{ width:630px; float:left;padding:40px; 0 0 20px}
.top .con .lc .tab_btn { height: 25px;}
.top .con .lc .tab_btn li { float: left; width: 40px; height: 25px;line-height: 25px; text-align: center; cursor: pointer; 
font-weight: normal; font-size: 12px; margin:0 4px 0 0; }
.top .con .lc .tab_btn li a.here{
    color: #fff;
    font-weight: bold;
    background-color: #77602a;display:block
}
.top .con .lc .tab_btn li a{ color: #e7dfca; font-weight: normal; background-color: #433412; display:block}
.top .con .lc .wrap {background-image: url();background-repeat: no-repeat;}
.top .con .lc .tab_box {}
.top .con .lc .tab_box .guang{width:600px;height:28px; overflow:hidden; padding:2px 0 0 0;}
.top .con .lc .tab_box .keyword{color: #fff;}
.top .con .lc .tab_box .guang .zltsearch_i{
    width:510px;
    height:25px;
    font-size:14px;
    color:#000;
    line-height:25px;
     float:left; margin:0 0 0 4px;}
.top .con .lc .tab_box .guang .zltsearch_s{
    float:right;
    background-image: url();
    background-repeat: no-repeat;
    height: 26px;
    width: 71px;
    margin-top: 0;
    margin-right: 2px;
    margin-bottom: 0;
    margin-left: 0;
    border:0
}
.top .con .ls{ width:90px; float:right;}
.top .con .ls ul{ padding-top:40px}
-->
</style>
<script src="http://product.pcpop.com/js/jquery.js"></script>
<script>
function subQuery()
                {
                    var searchTypeId = document.sform1.searchType.value;
                    //alert(document.sform1.searchType.value);
                    var keyWord =document.getElementById("query").value;
                    var keyWordNews =document.getElementById("query1").value;
                    var url = "";
                    
                      switch(searchTypeId)
                        {
                            case "1": 
                                url ='1';
                                break;
                            case "2": 
                                url ='1';
                                break;
                            case "3": 
                                     url ='1';
                                break;        
                            case "4": 
                                     url ='1';
                                break;                          
                            
                        }
                        var formSubmit =document.getElementById('sform1');
                        formSubmit.action=url;
                        //formSubmit.submit();
                        //return false;
                    
                }
                
                
function shosearch(sid)
    {
        var searchform = document.sform1.searchType;
        var hform = document.sform1;
        searchform.value=sid;
        for(var si =1;si<=4;si++)
        {
           document.getElementById("tab8_"+si).className="";
        }
        document.getElementById("tab8_"+sid).className="here";    
        var keyWord =document.getElementById("query").value;
        var keyWordNews =document.getElementById("query1").value;
        switch(sid)
        {
            case 1: 
                 hform.query1.style.display="none";
                 hform.query.style.display="";                 
                break;
            case 2: 
                   hform.query1.style.display="";
                   hform.query.style.display="none";    
                break;
            case 3: 
                 hform.query1.style.display="";
                 hform.query.style.display="none";
                break;
            case 4: 
                 hform.query1.style.display="";
                 hform.query.style.display="none";
                break;
            default:
                 hform.query.style.display="";
                 hform.query1.style.display="none";
                break;
        }
        if (sid==1)
        {
           if (keyWordNews!="") 
               document.getElementById("query").value =  keyWordNews;
           
        }
        else
        {
           if (keyWord!="") 
           {
             document.getElementById("query1").value = keyWord;
           }
        }
     }
</script>
</head>
<body>
<div class="box">
    <div class="top">
            <div class="logo"></div>
            <div class="con">
             <div class="lc">
             <ul class="tab_btn">
               <li><a class="here" href="javascript:void(0)" id="tab8_1" onClick="shosearch(1);" target="_self" 
onFocus="this.blur()">文字1</a>
</li>
<li><a href="javascript:void(0)" id="tab8_2" onClick="shosearch(2);" target="_self" onFocus="this.blur
()">文字2</a></li>
               <li><a href="javascript:void(0)" id="tab8_3" onClick="shosearch(3);" target="_self" onFocus="this.blur
()">文字3</a>
<li><a href="javascript:void(0)" id="tab8_4" onClick="shosearch(4);" target="_self" onFocus="this.blur
()">文字4</a>
</li> </ul></li>
               <div class="wrap">
               
                        <div class="tab_box">
                           <div class="guang">
                            <form name="sform1" id="sform1" method="post" target="_self" action="" onSubmit="subQuery();">
                              <input type="text" class="zltsearch_i" id="query" name="query" value="" /><input type="text" 
class="zltsearch_i" id="query1" name="query1" style="display:none;" onClick="sform1.query.value=''" /><input type="submit" 
class="zltsearch_s" id="btnFSearch" value="搜索" /><input type="hidden" value="1" name="searchType" id="searchType">
                            </FORM>
                           </div>
                           <div class="keyword">
                           </div>
                        </div>
                        
                        
                        
               </div>  
        </div>
         <div class="ls">
           <ul>
             <li></li>
            </ul>
           </div>
     </div>
    </div>
    
</div>
</body>
</html>