function switch_screen()
{
 if($("body").width()<1200)
 {
  $("html").css("background-image","url(images/background_1024.jpg)").css("font-size","11px").css("min-height","550px").css("_height","550px");
  $(".symbol").attr("style","_height: 550px").css("min-height","550px").css("width","100%").css("background-image","url(images/label_1024.png)");
  $(".symbol2").css("background-image","url(images/mini_1024.png)");
  $(".content").css("top","260px");
 }
 if($("body").width()>=1200 && $("body").width()<1600)
 {
  $("html").css("background-image","url(images/background_1280.jpg)").css("font-size","15px");
  $(".symbol").attr("style","_height: 757px").css("min-height","757px").css("width","100%").css("background-image","url(images/label_1280.png)");
  $(".symbol2").css("background-image","url(images/mini_1280.png)");
  $(".content").css("top","350px");
 }
 if($("body").width()>=1600)
 {
  $("html").css("background-image","url(images/background_1680.jpg)").css("font-size","17px");
  $(".symbol").attr("style","_height: 845px").css("min-height","845px").css("width","100%").css("background-image","url(images/label_1680.png)");
  $(".symbol2").css("background-image","url(images/mini_1680.png)");
  $(".content").css("top","450px");
 }
}

$(function(){
 switch_screen();
// $(".hrono_block:lt(1)").fadeTo(0,0.6).hover(function(){$(this).fadeTo(200,1);},function(){$(this).fadeTo(200,0.6);});
// $(".hrono_block").hover(function(){$(".hrono_block").not(this).fadeTo(500,0.5);},function(){$(".hrono_block").not(this).fadeTo(0,1);});
});