function BoxLink(boxname){
 $(boxname).click(
  function(){
   var valLink = $(this).find("a").attr("href");
   window.location.href = valLink;
  }
 );
}
function BoxHover(boxname){
 $(boxname).hover(
  function(){
   $(this).addClass("hover");
  },
  function(){
   $(this).removeClass("hover");
  }
 );
}

$(document).ready(function(){
 BoxLink("#page_top .banner1, #page_top .top_block2 .banner");
});