/*
(c) CG "ARM", 2008
*/
var CM=0;
var MX=0;
var MY=0;

function BGT(mode) {
 var Titbg=document.getElementById('titbg');
switch(mode) {
case 1:
 if (CM==0) {
  CM=1;
  MX=Xpos;
  MY=Ypos
 }
 break
case 2:
 if (CM==1) {
  OX=SX+Xpos-MX;
  if (OX>0) {
   MX+=OX;
   OX=0
  }
  if (OX<DX) {
   MX-=DX-OX;
   OX=DX
  }
  OY=SY+Ypos-MY;
  if (OY>0) {
   MY+=OY;
   OY=0
  }
  if (OY<DY) {
   MY-=DY-OY;
   OY=DY
  }
  Titbg.style.backgroundPosition=OX+" "+OY
 }
 break
case 3:
 CM=0;
 break
case 4:
 if (CM==1) {
  CM=2;
  Titbg.style.backgroundPosition=SX+" "+SY
 } else {
  if (CM==2) {
  CM=1
 }}
 break
}}