function externalLinks() { 
 if (!document.getElementsByTagName) return; 
 var anchors = document.getElementsByTagName("a"); 
 for (var i=0; i<anchors.length; i++) { 
   var anchor = anchors[i]; 
   if (anchor.getAttribute("href") && 
       anchor.getAttribute("rel") == "external") 
     anchor.target = "_blank"; 
 } 
} 
window.onload = externalLinks;


/*
 * Scroll automatique du block de droite
 */
$(window).scroll(function () { 
	if( $(window).scrollTop() > 350 ) {
		$('.blockscroll').css('top', $(window).scrollTop() - 350);
	}
});