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I done it through css code, just follow this steps

#views_slideshow_singleframe_prev_gallery-block_1, #views_slideshow_singleframe_next_gallery-block_1 {   width:71px;   height:0px;   padding-top:71px;   position:absolute;   top:100px;   overflow:hidden; } 

#views_slideshow_singleframe_prev_gallery-block_1 {   background:url('images/left-button-on.png');   left:0px; } 

#views_slideshow_singleframe_next_gallery-block_1 {   background:url('images/right-button-on.png');   right:0px; }

 #views_slideshow_singleframe_playpause_gallery-block_1 {   display:none; } 

And also take a look at https://drupal.org/node/691984