function mentions_legales() {
if (document.all)
var xMax = screen.width, yMax = screen.height;
else
if (document.layers)
var xMax = window.outerWidth, yMax = window.outerHeight;
else
var xMax = 1024, yMax=768;
var xOffset = (xMax - 350)/2, yOffset = (yMax - 500)/2;
window.open('mentions-legales-haliotis.html','mentions',
'width=570,height=560,scrollbars=yes,resizable=yes,toolbar=yes,screenX='+xOffset+',screenY='+yOffset+',top='+yOffset+',left='+xOffset+'');
}

function photos_diaporama() {
if (document.all)
var xMax = screen.width, yMax = screen.height;
else
if (document.layers)
var xMax = window.outerWidth, yMax = window.outerHeight;
else
var xMax = 1024, yMax=768;
var xOffset = (xMax - 350)/2, yOffset = (yMax - 500)/2;
window.open('diaporama-haliotis.html','diaporama',
'width=900,height=400,scrollbars=yes,resizable=yes,toolbar=yes,screenX='+xOffset+',screenY='+yOffset+',top='+yOffset+',left='+xOffset+'');
}