function display(block)
{
	var style = document.getElementById(block).style.display;
	if (style == "none")
	{
		document.getElementById(block).style.display = "block";
	}
	else
	{
		document.getElementById(block).style.display = "none";
	}
}

function show(block)
{
	document.getElementById(block).style.display = 'block';
}

function hide(block)
{
	document.getElementById(block).style.display = 'none';
}

function switchImage(imgName, imgSrc) 
{
  if (document.images)
  {
    if (imgSrc != "none")
    {
      document.images[imgName].src = imgSrc;
    }
  }
}

function popup(page,largeur,hauteur,options) {
  var top=(screen.height-hauteur)/2;
  var left=(screen.width-largeur)/2;
  window.open(page,"","top="+top+",left="+left+",width="+largeur+",height="+hauteur+","+options);
}

function imgGps1(){
	windowOpen=popup("/htdocs/images/gps/gps-radar-big.gif",235,199,"menubar=no,scrollbars=no,statusbar=no,resizable=no");
}

function imgGps2(){
	windowOpen=popup("/htdocs/images/gps/gps-carburant.gif",235,199,"menubar=no,scrollbars=no,statusbar=no,resizable=no");
}

function imgGps3(){
	windowOpen=popup("/htdocs/images/gps/gps-radar-big.gif",235,199,"menubar=no,scrollbars=no,statusbar=no,resizable=no");
}

function imgGps4(){
	windowOpen=popup("/htdocs/images/gps/gps-radar-big.gif",235,199,"menubar=no,scrollbars=no,statusbar=no,resizable=no");
}

function imgGps5(){
	windowOpen=popup("/htdocs/images/gps/gps-carburant.gif",235,199,"menubar=no,scrollbars=no,statusbar=no,resizable=no");
}

function imgGps6(){
	windowOpen=popup("/htdocs/images/gps/gps-radar-big.gif",235,199,"menubar=no,scrollbars=no,statusbar=no,resizable=no");
}

function imgGps7(){
	windowOpen=popup("/htdocs/images/gps/gps-carburant.gif",235,199,"menubar=no,scrollbars=no,statusbar=no,resizable=no");
}

function imgGps8(){
	windowOpen=popup("/htdocs/images/gps/gps-carburant.gif",235,199,"menubar=no,scrollbars=no,statusbar=no,resizable=no");
}