anchor.diff:  
   	int c_offset = (request.getParameter("c_offset") != null) ? Integer.parseInt(""+request.getParameter("c_offset")):0;
   	int r_offset = (request.getParameter("r_offset") != null) ? Integer.parseInt(""+request.getParameter("r_offset")):0;
  -	
  +	String disabled = "";
  +	if(c_offset + r_offset != 0)
  +	{
  +		disabled = "disabled";
  +	}
   	keyword = (keyword.equals("null"))? "":keyword;
   	
   	conn = DriverManager.getConnection(
  
positive.code: 	<!-- product search -->
  	<div class="row">
  		<div class="col-sm-4">
  			<form class="navbar-form navbar-left" role="search" action="dashboard.jsp" method="GET">
  				<select class="form-control" name="scope">
  		        	<option value="customers">Customers</option>
  		        	<option value="states">States</option>
  
negative.code: 			<form>
  				<input type="hidden" name="c_offset" value="<%= (c_offset + 20) %>"/>
  				<input type="hidden" name="r_offset" value="<%= r_offset%>"/>
  				<input type="submit" class="btn btn-default" value="Next 20 customers" />
  			</form>
  	
  		</div>
  