function openContactBox()
{
	if(document.getElementById('contact_box_mainmenu')){
		document.getElementById('contact_box_mainmenu').style.display = "block";
	}
}

function closeContactBox()
{
	if(document.getElementById('contact_box_mainmenu')){
		document.getElementById('contact_box_mainmenu').style.display = "none";
	}
}