// JScript 文件

function switchbox(i)
{
 selectbox(i);
}

function selectbox(i)
{
 var j;
 for(j=1;j<=5;j++)
 {
   document.getElementById('td'+j).style.backgroundImage='url(Images/main_visa_btn_out.jpg)';
   document.getElementById("chau"+j).style.display="none";
 }
 document.getElementById('td'+i).style.backgroundImage='url(Images/main_visa_btn_over.jpg)';
 document.getElementById("chau"+i).style.display="block";
}