function searchOpt(n) {
var P_news = document.all.P_news
var P_travel = document.all.P_travel

var F_news = document.all.F_news
var F_travel = document.all.F_travel

if (n==1) {
P_news.background = '/zhoubian/images/left_r1_c2.jpg'
P_travel.background = '/zhoubian/images/left_r1_c7.jpg'
F_news.style.display = ""
F_travel.style.display = "none"

}

if (n==2) {
P_news.background = '/zhoubian/images/left_r1_c7.jpg'
P_travel.background = '/zhoubian/images/left_r1_c2.jpg'
F_news.style.display = "none"
F_travel.style.display = ""
}
}