// JavaScript Document
//#to-top button appears after scrolling
var fixed = false;
$(document).scroll(function() {
 if ($(this).scrollTop() > 250) {
  if (!fixed) {
   fixed = true;
   // $('#to-top').css({position:'fixed', display:'block'});
   $('#to-top').show("slow", function() {
    $('#to-top').css({
     position: 'fixed',
     display: 'block'
    });
   });
  }
 } else {
  if (fixed) {
   fixed = false;
   $('#to-top').hide("slow", function() {
    $('#to-top').css({
     display: 'none'
    });
   });
  }
 }
});
/*hover_img*/
$(document).ready(function(){
 $('#bnimg1').hover(
 function(){$(this).attr('src','img/s_imgs/bnimg05r.gif')},
 function(){$(this).attr('src','img/s_imgs/bnimg05.gif')}
 ) 
 $('#bnimg2').hover(
 function(){$(this).attr('src','img/s_imgs/bnimg06r.gif')},
 function(){$(this).attr('src','img/s_imgs/bnimg06.gif')}
 ) 
 $('#bnimg3').hover(
 function(){$(this).attr('src','img/s_imgs/bnimg07r.gif')},
 function(){$(this).attr('src','img/s_imgs/bnimg07.gif')}
 )
 $('#simg1').hover(
 function(){$(this).attr('src','img/s_imgs/sns01r.png')},
 function(){$(this).attr('src','img/s_imgs/sns01.png')}
 ) 
 $('#simg2').hover(
 function(){$(this).attr('src','img/s_imgs/sns02r.png')},
 function(){$(this).attr('src','img/s_imgs/sns02.png')}
 ) 
 $('#simg3').hover(
 function(){$(this).attr('src','img/s_imgs/sns03r.png')},
 function(){$(this).attr('src','img/s_imgs/sns03.png')}
 ) 
 $('#simg4').hover(
 function(){$(this).attr('src','img/s_imgs/sns04r.png')},
 function(){$(this).attr('src','img/s_imgs/sns04.png')}
 ) 
});