$.fn.popupimage = function(){

var nbpopup = $(this).length; // nombre d'images

$(this).live('click', function(){

	$('.popupimg').remove();
	
	var sw = screen.width / 2;
	var sh = screen.height / 2;
		
	var offset = $(this).offset();
	
	var myString = $(this).attr("rel");
	var mySplitResult = myString.split(";");
	
	console.log(myString);
	
	$("#header").prepend("<div class=\"popupimg\"><a href=\"#\" class=\"closed\">Fermer cette fenêtre [X]</a><img class=\"big_topic\" src="+mySplitResult[2]+" alt=\"chargement de l'image, patientez svp...\" /></div>");

	var wImg = mySplitResult[0];
	var hImg = mySplitResult[1];
	
	var margtop = sh - ((hImg / 2) + 100);
	var margleft = sw - (wImg / 2);
	
	$(".popupimg").css({position:"fixed", top:margtop+"px", left:margleft+"px", padding:"5px 5px 20px 5px",  width:wImg+"px", minHeight:hImg+"px", zIndex:1200});
	
	$(".popupimg, .popupimg img").fadeIn(400);
	
	return false;
});

$(".popupimg>a.closed, .popupimg img").live('click', function(){
	$(this).parent().remove();
	return false;
});

return this;
}