var a =new Array(1,2,3,4);
function show_a(id){
for(i=0;i<a.length;i++){
var button =document.getElementById('b_a'+a[i]);
var tag =document.getElementById('t_a'+a[i]);

if(id==a[i]){
tag.style.display ='block';
button.className='over';
document.getElementById('b_a1').className='tit';
}else{
tag.style.display ='none';
button.className='out';
document.getElementById('b_a1').className='tit';
}
}
}

var b =new Array(1,2,3,4,5,6);
function show_b(id){
for(i=0;i<b.length;i++){
var button =document.getElementById('b_b'+b[i]);
var tag =document.getElementById('t_b'+b[i]);

if(id==b[i]){
tag.style.display ='block';
button.className='over';
document.getElementById('b_b1').className='tit';
}else{
tag.style.display ='none';
button.className='out';
document.getElementById('b_b1').className='tit';
}
}
}



var c =new Array(1,2,3,4,5,6,7);
function show_c(id){
for(i=0;i<c.length;i++){
var button =document.getElementById('b_c'+c[i]);
var tag =document.getElementById('t_c'+c[i]);

if(id==c[i]){
tag.style.display ='block';
button.className='over';
document.getElementById('b_c1').className='tit';
}else{
tag.style.display ='none';
button.className='out';
document.getElementById('b_c1').className='tit';
}
}
}



var z =new Array(1,2,3,4);
function show_z(id){
for(i=0;i<z.length;i++){
var button =document.getElementById('b_z'+z[i]);
var tag =document.getElementById('t_z'+z[i]);

if(id==z[i]){
tag.style.display ='block';
button.className='over';

}else{
tag.style.display ='none';
button.className='out';

}
}
}




var f =new Array(1,2,3,4);
function show_f(id){
for(i=0;i<f.length;i++){
var button =document.getElementById('b_f'+f[i]);
var tag =document.getElementById('t_f'+f[i]);

if(id==f[i]){
tag.style.display ='block';
button.className='over';
document.getElementById('b_f1').className='tit';
}else{
tag.style.display ='none';
button.className='out';
document.getElementById('b_f1').className='tit';
}
}
}



var g =new Array(1,2);
function show_g(id){
for(i=0;i<g.length;i++){
var button =document.getElementById('b_g'+g[i]);
var tag =document.getElementById('t_g'+g[i]);

if(id==g[i]){
tag.style.display ='block';
button.className='over';
}else{
tag.style.display ='none';
button.className='out';
}
}
}


var h =new Array(1,2,3,4);
function show_h(id){
for(i=0;i<h.length;i++){
var button =document.getElementById('b_h'+h[i]);
var tag =document.getElementById('t_h'+h[i]);

if(id==h[i]){
tag.style.display ='block';
button.className='over';
}else{
tag.style.display ='none';
button.className='out';
}
}
}



var w =new Array(1,2,3,4);
function show_w(id){
for(i=0;i<w.length;i++){
var button =document.getElementById('b_w'+w[i]);
var tag =document.getElementById('t_w'+w[i]);

if(id==w[i]){
tag.style.display ='block';
button.className='over';
}else{
tag.style.display ='none';
button.className='out';
}
}
}




var k =new Array(1,2,3,4);
function show_k(id){
for(i=0;i<k.length;i++){
var button =document.getElementById('b_k'+k[i]);
var tag =document.getElementById('t_k'+k[i]);

if(id==k[i]){
tag.style.display ='block';
button.className='over';
}else{
tag.style.display ='none';
button.className='out';
}
}
}




var l =new Array(1,2,3,4);
function show_l(id){
for(i=0;i<l.length;i++){
var button =document.getElementById('b_l'+l[i]);
var tag =document.getElementById('t_l'+l[i]);

if(id==l[i]){
tag.style.display ='block';
button.className='over';
}else{
tag.style.display ='none';
button.className='out';
}
}
}


var m =new Array(1,2,3,4,5,6,7,8);
function show_m(id){
for(i=0;i<m.length;i++){
var button =document.getElementById('b_m'+m[i]);
var tag =document.getElementById('t_m'+m[i]);

if(id==m[i]){
tag.style.display ='block';
button.className='over';
}else{
tag.style.display ='none';
button.className='out';
}
}
}

function get(id) 
{ 
if (id == 0) 
document.write("供应信息"); 
else if (id == 1) 
document.write("求购信息"); 
else if (id == 2) 
document.write("紧急求购"); 
else if (id == 3) 
document.write("寻求合作"); 
else if (id == 4) 
document.write("诚招代理"); 
} 



var s = new Array(1,2);
var t = new Array("标题搜索","内容搜索");
function show_s(id){
for(i=0;i<s.length;i++){
var button =document.getElementById('b_s'+s[i]);
var Submit =document.getElementById('Submit');
if(id==s[i]){
button.className='over';
Submit.value = t[i];
}else{
button.className='out';
}
}
}