function hide(elem)
{
    var item = document.getElementById(elem);
    if (item)
    {	item.style.display = 'none';
    }
}


function my_switch(elem)
{	
	try
	{
		// Si les librairies jquery sont chargées
		if ($(window))
		{
			if ($('#'+elem).css('display') == "none")
				$('#'+elem).slideDown('normal');
			else
				$('#'+elem).slideUp('normal');
			
		}
	}
	catch(err) // sinon ancienne méthode
	{
		var item = document.getElementById(elem);
	    if (item)
	    {	if (item.style.display == 'none')
	    	{	item.style.display='block';
	    	}
	    	else
	  		{	item.style.display='none';
	  		}
	    }
	}
}


function show(elem) {
    var item = document.getElementById(elem);
    var item_form = document.getElementById('landing');
    if (item_form)
    {	pos=item_form.action.search('tab=');
    	if (pos>0)
    	{	item_form.action=item_form.action.substr(0,pos-1);
    	}
    	item_form.action=item_form.action + '?tab=' + elem;}
    if (item)
    {	item.style.display = '';
    }
}

function selecttab(tab) {
    var tabs = tab.parentNode.parentNode.childNodes;
    for (var i = 0; i < tabs.length; i++) {
        if (tabs[i].tagName == "LI") {
            tabs[i].className = "";
        }
    }
    tab.parentNode.className = "selected";
}