function select_category(id_no){
    var category              = document.getElementById('category');
    category.value            = id_no;
    document.category_select.submit();
  }
  
  function select_products(id_no){
    var product               = document.getElementById('product');
    var continue_search       = document.getElementById('continue_search');
    var search_value          = document.getElementById('search_value');
    product.value             = id_no;
    if(continue_search != undefined){
      continue_search.value   = "";
    }
    document.product_select.submit();
  }
  
  function search_products(id_no){
    var product               = document.getElementById('product');
    product.value             = id_no;
    document.search_product.submit();
  }
  
  function open_img(img_name,image_width,image_height){
    subwin = window.open("../product/img/"+img_name,"plan","width="+image_width+",height="+image_height+",scrollbars=yes,location=no,status=0,directories=no,toolbar=no,left=0,top=0,resizable=yes");
  }
  
  function move_level(category_level){
    var link_target           = document.getElementById('link_target');
    var form_value            = document.getElementById('category');
    form_value.value          = category_level;
    //SUBMIT
    link_target.submit();
  }
  
  function color_check(){
    var check_position        = document.getElementById("search_value");
    check_position.style.color = "#000";
  }
  
  function onmouse_style(cursor_style){
    //cursor_style.style = 'pointer';
    cursor_style = 'hand';
  }
  
  function move_page(offset){
    var offset_page     = document.getElementById("offset");
    var search_value    = document.getElementById("search_value");
    var continue_search = document.getElementById("search");
    var value           = new String (search_value.value) ;
    continue_search.value = value;
    offset_page.value   = offset;
    document.product_select.submit();
  }
  
  function direct_products(id){
    var product_id      = document.getElementById("product");
    product_id.value    = id;
    document.category_select.submit();
  }