// JScript File

      function doTop(){
        var obj=document.all("cboChoicePage");
        obj.selectedIndex=0;
        form1.submit();
      }
      
      function doPrior(){
        var obj=document.all("cboChoicePage");
        if(obj.selectedIndex>0) obj.selectedIndex=obj.selectedIndex-1;
        form1.submit();
      }
      
      function doNext(){
        var obj=document.all("cboChoicePage");
        if(obj.selectedIndex<obj.length-1) obj.selectedIndex=obj.selectedIndex+1;
        form1.submit();
      }
      
      function doLast(){
        var obj=document.all("cboChoicePage");
        obj.selectedIndex=obj.length-1;
        form1.submit();
      }