function getIXLayer(name) {
	if (isMinIE4)
		return eval('document.all.' + name);
	if (NS6)
		return document.getElementById(name);
	return null;
}


function display_menu(nom){
	layer= getLayer(nom);
	if(nom=="auteur" || nom=="titres") layer.className = "niveau2done";
	else layer.className = "done";
}

function changeimg(ajout){
	livre= getLayer('couverture');
	navigation = getLayer('navig');
	if(ajout=="+"){
		image++;
		livre.innerHTML='<a href="javascript:showimg();" id="couverturea"><img src="../img/livres/170px/'+tabimg[image-1]+'" width="170" alt="" border="0" /></a>';
		if(image+1>tabimg.length)navigation.innerHTML='<a href="javascript:changeimg(\'-\');"><img src="../img/fleche_precedent.gif" width="9" height="11" alt="" border="0"></a>&nbsp;Images '+ (image)+'  / '+tabimg.length +'&nbsp;<img src="../img/fleche_suivant_inactif.gif" width="9" height="11" alt="" border="0">';
		else{
		  navigation.innerHTML='<a href="javascript:changeimg(\'-\');"><img src="../img/fleche_precedent.gif" width="9" height="11" alt="" border="0"></a>&nbsp;Images '+ (image)+'  / '+tabimg.length +'&nbsp;<a href="javascript:changeimg(\'+\');"><img src="../img/fleche_suivant.gif" width="9" height="11" alt="" border="0"></a>';
		}
	}
	else{
		image--;
		if(image-1<=0){
			navigation.innerHTML='<img src="../img/fleche_precedent_inactif.gif" width="9" height="11" alt="" border="0">&nbsp;Images '+ (image)+'  / '+tabimg.length +'&nbsp;<a href="javascript:changeimg(\'+\');"><img src="../img/fleche_suivant.gif" width="9" height="11" alt="" border="0"></a>';
		}
		else{
			navigation.innerHTML='<a href="javascript:changeimg(\'-\');"><img src="../img/fleche_precedent.gif" width="9" height="11" alt="" border="0"></a>&nbsp;Images '+ (image)+'  / '+tabimg.length +'&nbsp;<a href="javascript:changeimg(\'+\');"><img src="../img/fleche_suivant.gif" width="9" height="11" alt="" border="0"></a>';
			
		}livre.innerHTML='<a href="javascript:showimg();" id="couverturea"><img src="../img/livres/170px/'+tabimg[image-1]+'" width="170" alt="" border="0" /></a>';
	}

}

function showimg(pUrl, pId){
	bigimg= getIXLayer('grandeimg_'+pId);
	acouverture= getIXLayer('petiteimg_'+pId);
	acouverture.style.visibility="hidden";
	bigimg.innerHTML='<div class="reduire"><a href="javascript:hideimg(\''+pId+'\');" class="reduire" style="color:#FFFFFF;">Cliquer pour r&eacute;duire</a></div><a href="javascript:hideimg(\''+pId+'\');"><img src="'+pUrl+'" alt="" border="0" /></a>';
}

function hideimg(pId){
	bigimg= getIXLayer('grandeimg_'+pId);
	bigimg.innerHTML='';
	bigimg.style.visibily="hidden";
	smallimg = getIXLayer('petiteimg_'+pId);
	smallimg.style.visibility='visible';
}