if (document.images) {
var subnav_vns_1 = new Image()
subnav_vns_1.src = 'img/index_btn_vness_1.gif'
var subnav_vns_1_b = new Image()
subnav_vns_1_b.src = 'img/index_btn_vness_1_ov.gif'

var subnav_vns_2 = new Image()
subnav_vns_2.src = 'img/index_btn_vness_2.gif'
var subnav_vns_2_b = new Image()
subnav_vns_2_b.src = 'img/index_btn_vness_2_ov.gif'

var subnav_vns_3 = new Image()
subnav_vns_3.src = 'img/index_btn_vness_3.gif'
var subnav_vns_3_b = new Image()
subnav_vns_3_b.src = 'img/index_btn_vness_3_ov.gif'

var subnav_other_1 = new Image()
subnav_other_1.src = 'img/index_btn_other_1.gif'
var subnav_other_1_b = new Image()
subnav_other_1_b.src = 'img/index_btn_other_1_ov.gif'

var subnav_other_2 = new Image()
subnav_other_2.src = 'img/index_btn_other_2.gif'
var subnav_other_2_b = new Image()
subnav_other_2_b.src = 'img/index_btn_other_2_ov.gif'
}