text: var d=1;
  $("#add_dut").click(function(){
  	$('#row'+d).html("<td>"+ (d+1) +"</td><td><input  name='device~"+d+"' type='text' placeholder='V8500_SFU'  class='form-control required input-md'></td><td><input name='username~"+d+"' type='text' placeholder='admin' class='form-control required input-md'  /> </td><td><input name='password~"+d+"' type='text' placeholder='Dasan123456' class='form-control input-md'  /> ");
  
  	$('#dut_tab').append('<tr id="row'+(d+1)+'"></tr>');
  	d++; 
  });
  $("#del_dut").click(function(){
  	if(d>1){
  		$("#row"+(d-1)).html('');
  		d--;
  	}
  });
  
  $.validator.setDefaults({
  	errorPlacement: function(error, element) {
  		$(element).closest("div").addClass("has-error")
  	},
  });
  
  $().ready(function() {
  	$("#caseform").validate();
  });
  