function FlipDisplay(d1,d2) {
if(document.getElementById(d1).style.display == "none") { 
   document.getElementById(d1).style.display = "";
   document.getElementById(d2).style.display = "none";
   }
else {
   document.getElementById(d1).style.display = "none";
   document.getElementById(d2).style.display = "";
   }
}





function HideDIV(d) { document.getElementById(d).style.display = "none"; }
function DisplayDIV(d) { document.getElementById(d).style.display = "block"; }





function mouseOver()
{
document.getElementById("b1").src ="../images/tarif1_1_dwon.png";
}
function mouseOut()
{
document.getElementById("b1").src ="../images/tarif1_1_up.png";
}

function roll_over(img_name, img_src)
   {
   document[img_name].src = img_src;
   }
   
function roll(img_name1, img_src1, img_name2, img_src2, img_name3, img_src3)
   {
   document[img_name1].src = img_src1;
   document[img_name2].src = img_src2;
   document[img_name3].src = img_src3;
   }