a_gloss=new Image(164,19);a_gloss.src="images/a_gloss.gif";
gloss=new Image(164,19);gloss.src="images/gloss.gif";
enter=new Image(164,19);enter.src="images/enter.gif";
a_enter=new Image(164,19);a_enter.src="images/a_enter.gif";
lean=new Image(164,19);lean.src="images/lean.gif";
a_lean=new Image(164,19);a_lean.src="images/a_lean.gif";
reg=new Image(164,19);reg.src="images/reg.gif";
a_reg=new Image(164,19);a_reg.src="images/a_reg.gif";
biblio=new Image(164,19);biblio.src="images/biblio.gif";
a_biblio=new Image(164,19);a_biblio.src="images/a_biblio.gif";
content=new Image(164,19);content.src="images/content.gif";
a_content=new Image(164,19);a_content.src="images/a_content.gif";
dev=new Image(164,20); dev.src="images/dev.gif";
a_dev=new Image(164,19); a_dev.src="images/a_dev.gif";

function activate(graphName) {	
	active_img=eval("a_" + graphName + ".src");
        document.images[graphName].src=active_img;
}
function desactivate(graphName) {
	passive_img=eval(graphName + ".src");
	document.images[graphName].src=passive_img;	
}