var intervalId=0;

window.onresize=resizeBackgroundImage;

function resizeBackgroundImage(){

 windowWidth=document.body.clientWidth;
 windowHeight=document.body.clientHeight;

 y= windowHeight;
 x= windowWidth;
 
 document.getElementById('backgroundImage').style.width= x;
 document.getElementById('backgroundImage').style.height=y;

 document.getElementById('aboutLink').style.left= x/6;
 document.getElementById('purchaseLink').style.left= x/6;
 document.getElementById('contactLink').style.left= x/6;
 document.getElementById('indexLink').style.left= x/6;

 //tubes 348x352
 document.getElementById('tubesImage').style.height=y*0.70;
 document.getElementById('tubesImage').style.width= (y*0.70)*0.98;

 document.getElementById('tubesImage').style.top= (y-(y*0.70))/2;

 document.getElementById('tubesImage').style.left=-100;
 clearInterval(intervalId);
 intervalId=setInterval(translateRight, 50);

}

function translateRight(){
 x=document.body.clientWidth;
 n=parseInt(document.getElementById('tubesImage').style.left);
 document.getElementById('tubesImage').style.left=n+20;

 if(n>(x/2.5) )
  clearInterval(intervalId);

 if(n>1600 )
  clearInterval(intervalId);

}