anchor.diff:  		  <tr>
   			<td>
   			   <select id="selectedTables" name="selectedTables" style="width: 250px;" size="22">
  -			      <%for(int i=0;i<20;i++){%>
  +			      <%for(int i=0;i<500;i++){%>
   			       <option value=""></option>
   				  <%}%>
   			   </select>
  
positive.code: 		var itemId = "";
          var len02 = list.length;
  	    for (var i=0;i<len02;i++) {
             itemId = itemId+list.options[i].value+",";
  	    }
          //alert(itemId);
  	    document.getElementById("exportTables").value = itemId;
  
negative.code: 			ids.push(rows[i].tablename);
  		}
  		if(ids.length > 0 ){
  		    var x_ids = ids.join(',');
  			var dbType = jQuery('#dbType').val();
  			jQuery("#tables").val(x_ids);
  			document.iForm.action="<%=request.getContextPath()%>/mx/sys/table/genMappings?dbType="+dbType;
  			document.iForm.submit();
  		} else {
  