window.addEvent('domready', function(){
	galerie_image();
	menu();
	}
); 
function galerie_image(){
	var im = $$(".lien_image");
	var imG = $('image_principal');
	var imGfx = new Fx.Slide(imG, {duration: 1000, mode: 'horizontal'});
	
	im.each(function(imM,i){
		im[i].addEvent("click", function(I){
				var imName = im[i].get('name');
				
				imGfx.slideOut().chain(
					function(){
					  imG.set('src',imName);
					  this.slideIn();
					}
				);
			
		})
	})

}
function menu(){
	var MenuLink = $$(".lien_menu");
	MenuLink.fade(.5);
	
	MenuLink.each(function(MenuLinkI,i){
	
		MenuLinkI.addEvent("mouseenter", function(){
			MenuLinkI.fade(1);
		})
		MenuLinkI.addEvent("mouseout", function(){
			MenuLinkI.fade(.5);
		})
	})

}
function align(){

	var lmt = document.getElementById('site');
	var container = document.documentElement;

	if(lmt && container){
	    var containerHeight;
	    if (container.innerWidth){
            containerHeight = container.innerHeight;
		}
		else{
            containerHeight = container.clientHeight;
		}
	    var lmtHeight;
	    if (lmt.innerWidth){
            lmtHeight = lmt.innerHeight;
		}
		else{
            lmtHeight = lmt.offsetHeight;
		}
		var y = Math.ceil((containerHeight - lmtHeight) / 2);
		if(y < 0){
			y = 0;
		}
		lmt.style.position = "relative";
		lmt.style.top = y + "px";
	}
	if (document.getElementById){
		document.body.style.visibility = 'visible';
	}

}

function ResizeSite(obj,evt,fn,capt){
	if(obj.addEventListener){
		obj.addEventListener(evt, fn, capt);
		return true;
	}
	else if(obj.attachEvent){
		obj.attachEvent('on'+evt, fn);
		return true;
	}
	else return false;
}

if (document.getElementById && document.getElementsByTagName){
	ResizeSite(window, 'load', align, false);
	ResizeSite(window, 'resize', align, false);
}