/* affiche un menu specifique ou contract tous les liens */
function showLeftmenu(couterid){
	var submenu = document.getElementById("leftsubmenu"+couterid);
	var submenuimg = document.getElementById("leftsubmenuimg"+couterid);
	if(submenu)submenu.style.display = (submenu.style.display == 'block')? 'none':'block';
	if(submenuimg)submenuimg.src = (submenuimg.src.indexOf('leftmenuplus') != -1)? '/images/elements/leftmenu/leftmenuminus.gif':'/images/elements/leftmenu/leftmenuplus.gif';
}
/* etends ou contract le menu de droite */
function extendLeftmenu(){
	var display,source;
	if(document.getElementById('leftsubmenu1')){
		display = (document.getElementById('leftsubmenu1').style.display == 'none')?'block':'none';
		source = (document.getElementById('leftsubmenu1').style.display == 'none')?'/images/elements/leftmenu/leftmenuminus.gif':'/images/elements/leftmenu/leftmenuplus.gif'
	}
	for(var i=0;i<20;i++){
		if(document.getElementById('leftsubmenu'+i))document.getElementById('leftsubmenu'+i).style.display = display;
		if(document.getElementById('leftsubmenuimg'+i))document.getElementById('leftsubmenuimg'+i).src = source;
	}
}
/* affiche ou masque le signincontainer*/
function showSignin(){
	var signincontainer = document.getElementById('signincontainer');
	signincontainer.style.display = (signincontainer.style.display == 'none')? 'block': 'none';
}