function hide_screen()
{
  document.getElementById("square_text_zone").style.display='block'; 
  document.getElementById("square_text_zone1").style.display='none';
  document.getElementById("square_text_zone2").style.display='none';
  document.getElementById("square_text_zone3").style.display='none';
  document.getElementById("square_text_zone4").style.display='none'; 
}
function show_screen(num_screen)
{ 
  document.getElementById("square_text_zone1").style.display='none';
  document.getElementById("square_text_zone2").style.display='none';
  document.getElementById("square_text_zone3").style.display='none';
  document.getElementById("square_text_zone4").style.display='none'; 
  document.getElementById("square_text_zone").style.display='none'; 
  document.getElementById("square_text_zone"+num_screen).style.display='block';
}


function form_ident(form1,id){
	if(form1==0){
		document.getElementById("form_oubli"+id).style.display='block';
		document.getElementById("form_ins"+id).style.display='none';
	}else{
		document.getElementById("form_oubli"+id).style.display='none';
		document.getElementById("form_ins"+id).style.display='block';
	}
	
}

function switch_ext( old , newval ){
	oldvalue=newval;
	//alert( newval );
	document.getElementById( "liste_fichiers_"+newval ).style.display="block";
	document.getElementById( "liste_fichiers_"+old ).style.display="none";
	document.getElementById( "id_type_fichier" ).value=document.getElementById( "liste_fichiers_"+newval ).options[0].value;
	
	
	
	
	document.getElementById( "liste_versions_"+newval ).style.display="block";
	document.getElementById( "liste_versions_"+old ).style.display="none";
	document.getElementById( "num_version" ).value = document.getElementById( "liste_versions_"+newval ).options[0].value;
	
	document.getElementById( 'sel_log' ).innerHTML = newval;
	
}

function calculNombreFilms(){
	chk_cyan=document.getElementById("f_fc").checked;
	chk_magenta=document.getElementById("f_fm").checked;
	chk_jaune=document.getElementById("f_fj").checked;
	chk_noir=document.getElementById("f_fn").checked;
	var chk_ton=new Array();
	chk_ton[1]=document.getElementById("f_fcoul1").checked;
	chk_ton[2]=document.getElementById("f_fcoul2").checked;
	chk_ton[3]=document.getElementById("f_fcoul3").checked;
	chk_ton[4]=document.getElementById("f_fcoul4").checked;
	
	var resultat=0;
	if(chk_cyan) resultat++;
	if(chk_magenta) resultat++;
	if(chk_jaune) resultat++;
	if(chk_noir) resultat++;
	for(var i=1;i<5;i++){
		if(chk_ton[i]){
			var nbPages=document.getElementById("f_fcoulpages"+i).value.split(',').length;
			resultat+=nbPages;
			for(var j=0;j<nbPages;j++){
				if(document.getElementById("f_fcoulpages"+i).value.split(',')[j]=="" || isNaN(document.getElementById("f_fcoulpages"+i).value.split(',')[j]))
					resultat--;
			}
		}
	}
	document.getElementById("f_nbpage").value=resultat;
}

function validerFormulaire(){
	var i=1;
	for(i=1;i<5;i++){
		if(document.getElementById("f_fcoulcomp"+i) && document.getElementById("f_fcoulpages"+i)){
			if(document.getElementById("f_fcoulcomp"+i).value!="" && document.getElementById("f_fcoulpages"+i).value==""){
				alert("Vous n'avez pas précisé les pages pour un des tons directs");
				return false;
			}
		}
	}
	return true;
}