function switchtab(i)
{

switch(i)
    {
        case 1:
           document.getElementById("wangye").className="active";
           document.getElementById("gouwu").className="normal";
           document.getElementById("videos").className="normal";
           document.getElementById("musics").className="normal";
           document.getElementById("pictures").className="normal";       
           document.getElementById("maps").className="normal";
           document.getElementById("movies").className = "normal";
           //document.getElementById("zhidao").className = "normal";      
           
           document.getElementById("Search_Baidu").style.display=""; 
           document.getElementById("search_xunlei").style.display="none"; 
           document.getElementById("search_shipin").style.display="none";
           document.getElementById("search_xinwen").style.display="none";
           document.getElementById("search_gouwu").style.display="none"; 
           document.getElementById("search_image").style.display="none";
           document.getElementById("search_map").style.display = "none";
           //document.getElementById("baidu_zhidao").style.display = "none";
           break;
        case 2:
           document.getElementById("wangye").className="normal";
           document.getElementById("news").className="active";
           document.getElementById("videos").className="normal";
           document.getElementById("musics").className="normal";
           document.getElementById("pictures").className="normal";       
           document.getElementById("maps").className="normal";   
           document.getElementById("movies").className="normal";
           document.getElementById("gouwu").className = "normal";
           //document.getElementById("zhidao").className = "normal";   

           document.getElementById("Search_Baidu").style.display=""; 
           document.getElementById("search_xunlei").style.display="none"; 
           document.getElementById("search_shipin").style.display="none";
           document.getElementById("search_xinwen").style.display="none";
           document.getElementById("search_gouwu").style.display="none"; 
           document.getElementById("search_image").style.display="none";
           document.getElementById("search_map").style.display = "none";
           //document.getElementById("baidu_zhidao").style.display = "none";
           
           break;
        case 3:
           document.getElementById("wangye").className="normal";
           document.getElementById("gouwu").className="normal";
           document.getElementById("videos").className="active";
           document.getElementById("musics").className="normal";
           document.getElementById("pictures").className="normal";       
           document.getElementById("maps").className="normal";
           document.getElementById("movies").className = "normal";
           //document.getElementById("zhidao").className = "normal";         

           document.getElementById("Search_Baidu").style.display="none"; 
           document.getElementById("search_xunlei").style.display="none";
           document.getElementById("search_shipin").style.display="block";
           document.getElementById("search_xinwen").style.display="none";
           document.getElementById("search_gouwu").style.display="none";
           document.getElementById("search_image").style.display="none";
           document.getElementById("search_map").style.display = "none";
           //document.getElementById("baidu_zhidao").style.display = "none";
         
           break;
        case 4:
           document.getElementById("wangye").className="normal";
           document.getElementById("gouwu").className="normal";
           document.getElementById("videos").className="normal";
           document.getElementById("musics").className="active";
           document.getElementById("pictures").className="normal";       
           document.getElementById("maps").className="normal";
           document.getElementById("movies").className = "normal";
           //document.getElementById("zhidao").className = "normal";   
           
           document.getElementById("Search_Baidu").style.display="none"; 
           document.getElementById("search_xunlei").style.display=""; 
           document.getElementById("search_shipin").style.display="none";
           document.getElementById("search_xinwen").style.display="none";
           //document.xunleiform.action="http://mp3.gougou.com/search";
           //document.getElementById("xunleikeyword").name="search";
           document.getElementById("search_gouwu").style.display="none"; 
           document.getElementById("search_image").style.display="none";
           document.getElementById("search_map").style.display = "none";
           //document.getElementById("baidu_zhidao").style.display = "none";
        
           break;
        case 5:
           document.getElementById("wangye").className="normal";
           document.getElementById("gouwu").className="normal";     
           document.getElementById("videos").className="normal";
           document.getElementById("musics").className="normal";
           document.getElementById("pictures").className="active";       
           document.getElementById("maps").className="normal";
           document.getElementById("movies").className = "normal";
           //document.getElementById("zhidao").className = "normal";    
           
           document.getElementById("Search_Baidu").style.display="none"; 
           document.getElementById("search_xunlei").style.display="none"; 
           document.getElementById("search_shipin").style.display="none";
           document.getElementById("search_xinwen").style.display="none";
           document.getElementById("search_gouwu").style.display="none";
           document.getElementById("search_image").style.display="";
           document.getElementById("search_map").style.display = "none";
           //document.getElementById("baidu_zhidao").style.display = "none";
          
           break;           
        case 6:
           document.getElementById("wangye").className="normal";
           document.getElementById("gouwu").className="normal";
           document.getElementById("videos").className="normal";
           document.getElementById("musics").className="normal";
           document.getElementById("pictures").className="normal";       
           document.getElementById("maps").className="active";
           document.getElementById("movies").className = "normal";
           //document.getElementById("zhidao").className = "normal";    

           document.getElementById("Search_Baidu").style.display="none";  
           document.getElementById("search_xunlei").style.display="none";   
           document.getElementById("search_shipin").style.display="none";
           document.getElementById("search_xinwen").style.display="none";
           document.getElementById("search_gouwu").style.display="none";   
           document.getElementById("search_image").style.display="none";
           document.getElementById("search_map").style.display = "";
           //document.getElementById("baidu_zhidao").style.display = "none";
          
           break;      
         case 7:
           document.getElementById("wangye").className="normal";
           document.getElementById("gouwu").className="normal";
           document.getElementById("videos").className="normal";
           document.getElementById("musics").className="normal";
           document.getElementById("pictures").className="normal";       
           document.getElementById("maps").className="normal"; 
           document.getElementById("movies").className="active";
           //document.getElementById("zhidao").className = "normal";   
           
           document.getElementById("Search_Baidu").style.display="none"; 
           document.getElementById("search_xunlei").style.display="none";    
           document.getElementById("search_shipin").style.display="none";
           document.getElementById("search_xinwen").style.display="";
           //document.xunleiform.action="http://movie.gougou.com/search"; 
           //document.getElementById("xunleikeyword").name="search";  
           document.getElementById("search_gouwu").style.display="none";  
           document.getElementById("search_image").style.display="none";
           document.getElementById("search_map").style.display = "none";
           //document.getElementById("baidu_zhidao").style.display = "none";
           
           break;
          case 8:
           document.getElementById("wangye").className="normal";
           document.getElementById("gouwu").className="active";
           document.getElementById("videos").className="normal";
           document.getElementById("musics").className="normal";
           document.getElementById("pictures").className="normal";       
           document.getElementById("maps").className="normal"; 
           document.getElementById("movies").className="normal";
           //document.getElementById("zhidao").className = "normal";   
           
           document.getElementById("Search_Baidu").style.display="none"; 
           document.getElementById("search_xunlei").style.display="none"; 
           document.getElementById("search_shipin").style.display="none";
           document.getElementById("search_gouwu").style.display="";    
           //document.xunleiform.action="http://movie.gougou.com/search"; 
           document.getElementById("search_image").style.display="none";
           document.getElementById("search_map").style.display = "none";
           //document.getElementById("baidu_zhidao").style.display = "none";
           
           break;

       case 9:
           document.getElementById("wangye").className = "normal";
           document.getElementById("gouwu").className = "normal";
           document.getElementById("videos").className = "normal";
           document.getElementById("musics").className = "normal";
           document.getElementById("pictures").className = "normal";
           document.getElementById("maps").className = "normal";
           document.getElementById("movies").className = "normal";
           //document.getElementById("zhidao").className = "active";

           document.getElementById("Search_Baidu").style.display = "none";
           document.getElementById("search_xunlei").style.display = "none";
           document.getElementById("search_shipin").style.display="none";
           document.getElementById("search_gouwu").style.display = "none";
           document.getElementById("search_image").style.display = "none";
           document.getElementById("search_map").style.display = "none";
           //document.getElementById("baidu_zhidao").style.display = "";

          
           break;                     
    }

}

function set_gouwu()
{
    switch(document.gouwuform.gouwuse.selectedIndex)
    {
        case 0:
            document.gouwuform.action="http://www.amazon.cn/mn/searchApp" ;   
            document.getElementById("gouwukeyword").name="keywords";
             break;
        case 1:
             document.gouwuform.action="" ;   
             document.getElementById("gouwukeyword").name="key";

 
             
             break;
        case 2:
             document.gouwuform.action="http://www.loogoo.com/search.aspx" ;   
             document.getElementById("gouwukeyword").name="q";
            
            break;
    }
}

function dangdang()
{
    switch(document.gouwuform.gouwuse.selectedIndex)
    {
        
        case 1:
            location.href("http://union.dangdang.com/transfer/transfer.aspx?from=P-254093&backurl=http://search.dangdang.com/search.aspx?key="+document.getElementById("gouwukeyword").value);
            break;
        default:
            document.gouwuform.submit();
            break;
    }
}

function set_image()
{
    switch(document.imageform.imagese.selectedIndex)
    {
        case 0:
            document.imageform.action="http://images.google.cn/images" ;   
            document.getElementById("imagekeyword").name="q";
             break;
        case 1:
             document.imageform.action="http://image.baidu.com/i" ;   
             document.getElementById("imagekeyword").name="word";
             break;

    }
}
function set_map()
{
    switch(document.mapform.mapse.selectedIndex)
    {
        case 0:
            document.mapform.action="http://ditu.google.cn/maps" ;   
            document.getElementById("mapkeyword").name="q";
             break;
        case 1:
             document.mapform.action="http://map.baidu.com/" ;   
             document.getElementById("mapkeyword").name="#word";
             break;

    }
}