if(document.images)
{
  idxmenu_B1_off = new Image(); idxmenu_B1_off.src = "/buttons/idxmenu_B1.gif"
  idxmenu_B1_over = new Image(); idxmenu_B1_over.src = "/buttons/idxmenu_B1_over.gif"
  idxmenu_B2_off = new Image(); idxmenu_B2_off.src = "/buttons/idxmenu_B2.gif"
  idxmenu_B2_over = new Image(); idxmenu_B2_over.src = "/buttons/idxmenu_B2_over.gif"
  idxmenu_B3_off = new Image(); idxmenu_B3_off.src = "/buttons/idxmenu_B3.gif"
  idxmenu_B3_over = new Image(); idxmenu_B3_over.src = "/buttons/idxmenu_B3_over.gif"
  idxmenu_B4_off = new Image(); idxmenu_B4_off.src = "/buttons/idxmenu_B4.gif"
  idxmenu_B4_over = new Image(); idxmenu_B4_over.src = "/buttons/idxmenu_B4_over.gif"
  idxmenu_B5_off = new Image(); idxmenu_B5_off.src = "/buttons/idxmenu_B5.gif"
  idxmenu_B5_over = new Image(); idxmenu_B5_over.src = "/buttons/idxmenu_B5_over.gif"
}