function backToTop() {
  var x1 = x2 = x3 = 0;
  var y1 = y2 = y3 = 0;
  if (document.documentElement) {
      x1 = document.documentElement.scrollLeft || 0;
      y1 = document.documentElement.scrollTop || 0;
  }
  if (document.body) {
      x2 = document.body.scrollLeft || 0;
      y2 = document.body.scrollTop || 0;
  }
  x3 = window.scrollX || 0;
  y3 = window.scrollY || 0;
  var x = Math.max(x1, Math.max(x2, x3));
  var y = Math.max(y1, Math.max(y2, y3));
  window.scrollTo(Math.floor(x / 2), Math.floor(y / 2));
  if (x > 0 || y > 0) {
      window.setTimeout("backToTop()", 14);
  }
}


	$(document).ready(function() {
		$('.cache').hide();
		$('a.spip_out').click(function(){
			this.target = "_blank";
		});

		$('.showhide').click( function() {
			if($(this).next('.cache').is(':hidden')){
				$(this).next('.cache').toggle('slow');
				
				
			}
			else {
				$(this).next('.cache').toggle('slow');
				
			}
		});
		startmap();
	});