jquery add class to parent on input focus

Question

I have a contact form. I want to add class to parent div of the input box on the input:focus. Here is the fiddle . I want that not just the input box but the div background color should change to purple on the input focus.

Markup:

<div class="round">
    <div class="round_label">name</div>
    <input type="text" class="round_text">
</div>

Javascript:

jQuery(document).ready(function($) {
    $(".round_text:focus").parent().css('background', '#8b66ac');
    $('.round_text:focus').parent().css('background-color', 'red');
});

CSS:

.round {
    background: none repeat scroll 0 0 #F3F3F3;
    border-radius: 30px 30px 30px 30px;
    border-top: 1px solid #B2B2B2;
    height: 50px;
    padding-left: 20px;
    width: 440px;
}
.round_text:focus {
    background: none repeat scroll 0 0 #8b66ac;
}
.round_label {
    border-right: 1px solid #D1D1D1;
    color: #B6B6B6;
    float: left;
    font-size: 16px;
    height: 40px;
    padding-top: 10px;
    width: 156px;
}
.round_text {
    background: none repeat scroll 0 0 #F3F3F3;
    border: medium none;
    color: #424242;
    float: left;
    height: 50px;
    width: 240px;
}

---

Also, Can you help me as if i need to add two properties eg:

$(".round_text").focus(function(){
       $(this).parent().css('background', '#8b66ac','color','#fff');

  }).blur(function(){
       $(this).parent().css('background', /*color*/);
  })

Answer 1

You can add class instead and give the style

jQuery(document).ready(function($) {

 $(".text").focus(function(){
   $(this).parent().removeClass("round");
   $(this).parent().addClass("bluebg");

  }).blur(function(){
       $(this).parent().removeClass("bluebg");
   $(this).parent().addClass("round");
  })

});    

.bluebg {
background: none repeat scroll 0 0 #8b66ac;
color:#623886;
}