var select_link = null;
function details(div_id,link_obj)
{   
	document.getElementById("d_details").innerHTML = document.getElementById(div_id).innerHTML;
	if (select_link != null)
	{
		select_link.className = "main"
		select_link = null;
	}
	if (link_obj != null)
	{
		select_link = link_obj;
		select_link.className = "link_not_available";
		document.getElementById("a_production").className = "title-text  main cursor"
	}
	else 
		document.getElementById("a_production").className = "link_not_available";
}

function changeDisplay(elementId, disp) {
	var element = document.getElementById(elementId);
    if (element) {
        if (!disp) { disp = 'block'; }
        if (element.style.display == 'none') {
            element.style.display = disp;
        }
        else {
            element.style.display = 'none';
        }
    }
}