isamap = new Object();
isamap[0] = "_df"
isamap[1] = "_ov"
isamap[2] = "_ot"
isamap[3] = "_dn"

function isimgact(id, act)
{
	if(document.images) document.images[id].src = eval( "isimages." + id + isamap[act] + ".src");
}

if (document.images) {
isimages = new Object();
isimages.pres_df = new Image();
isimages.pres_df.src = "images/presentation.gif";
isimages.pres_ov = new Image();
isimages.pres_ov.src = "images/presentation_over.gif";

isimages.news_df = new Image();
isimages.news_df.src = "images/news.gif";
isimages.news_ov = new Image();
isimages.news_ov.src = "images/news_over.gif";

isimages.article_df = new Image();
isimages.article_df.src = "images/articles.gif";
isimages.article_ov = new Image();
isimages.article_ov.src = "images/articles_over.gif";

isimages.atelier_df = new Image();
isimages.atelier_df.src = "images/ateliers.gif";
isimages.atelier_ov = new Image();
isimages.atelier_ov.src = "images/ateliers_over.gif";

isimages.conf_df = new Image();
isimages.conf_df.src = "images/conf.gif";
isimages.conf_ov = new Image();
isimages.conf_ov.src = "images/conf_over.gif";

isimages.contact_df = new Image();
isimages.contact_df.src = "images/contact.gif";
isimages.contact_ov = new Image();
isimages.contact_ov.src = "images/contact_over.gif";

isimages.liens_df = new Image();
isimages.liens_df.src = "images/liens.gif";
isimages.liens_ov = new Image();
isimages.liens_ov.src = "images/liens_over.gif";

isimages.livreor_df = new Image();
isimages.livreor_df.src = "images/livreor.gif";
isimages.livreor_ov = new Image();
isimages.livreor_ov.src = "images/livreor_over.gif";
}