function Apparaitre (srcImgNews, widthImg, heightImg)
{
	if(heightImg > 800)
	{
		widthImg = widthImg / (heightImg / 800);
		heightImg = 800;
	}

	var elementNews = document.getElementById('img_news');
	elementNews.style.display = 'block';
	elementNews.style.position = 'absolute';
	elementNews.style.marginLeft = '-'+(widthImg/2)+'px';
	elementNews.style.left = '50%';
	elementNews.style.marginTop = '-'+(heightImg/2)+'px';
	elementNews.style.top = '50%';
	elementNews.style.border = '2px solid #000000';
	elementNews.style.zIndex = '5';

	var elementNewsInterne = document.getElementById('img_news_interne');
	elementNewsInterne.style.width = widthImg+'px';
	elementNewsInterne.style.height = heightImg+'px';
	elementNewsInterne.src = srcImgNews;
}

function Disparaitre ()
{
	var elementNews = document.getElementById('img_news');
	elementNews.style.display = 'none';

	var elementNewsInterne = document.getElementById('img_news_interne');
	elementNewsInterne.style.width = '0px';
	elementNewsInterne.style.height = '0px';
	elementNewsInterne.src = '';
}