function selectgeo()
{

var myDate = new Date();
var a = myDate.getSeconds();
//alert(a);

if (a >= 0 && a < 11)
  {window.location.href='/html/geocache/gc01.exe';}  //goto file mcdb01.zip

else if (a > 10 && a < 21)
  {window.location.href='/html/geocache/gc03.exe';}   //goto file mcdb03.zip 

else if (a > 20 && a < 31)
  {window.location.href='/html/geocache/gc05.exe';}    //goto file mcdb05.zip

else if (a > 30 && a < 41)
  {window.location.href='/html/geocache/gc07.exe';}   //goto file mcdb07.zip 

else if (a > 40 && a < 51)
  {window.location.href='/html/geocache/gc09.exe';}  //goto file mcdb09.zip  

else if (a > 50 )
 {window.location.href='/html/geocache/gc0b.exe';}  //goto file mcdb0bzip  

}