//CHANGE COLOR OF NAV SERIES BACKGROUND
function changeNavBack(id,status,num_page){
	if(document.getElementById(id)){

		var id_page='img_link'+num_page;
		if (id_page != id){
			if(status=='on'){
				document.getElementById(id).src=document.getElementById(id).src.substring(0,document.getElementById(id).src.indexOf('.jpg'))+"_select.jpg";
			}else{
				if(status=='off'){
					document.getElementById(id).src=document.getElementById(id).src.substring(0,document.getElementById(id).src.indexOf('_select.jpg'))+".jpg";
				}
			}	
		}
	}
}


//CHANGE COLOR OF VIDEO NAV

function changeLinkColor(id,nb){
	for(var i=1;i<=nb;i++){
		var chaine = new String(i);
		var chaine2= "link_em";
		var link_id = chaine2+chaine;
		if(document.getElementById(link_id)) {
			document.getElementById(link_id).style.color='';
		}
	}
	document.getElementById(id).style.color='#E2001A';
}