pictures = new Array()
for(i=0;i<4;i++)
   {
    pictures[i] = new Image()
    if(i==0) pictures[i].src = "img/aboutus1.gif"
    if(i==1) pictures[i].src = "img/production1.gif"
    if(i==2) pictures[i].src = "img/prices1.gif"
    if(i==3) pictures[i].src = "img/contacts1.gif"

   }