function avoirDefilementVertical(){ // taille en hauteur d'une page
  if(typeof( window.pageYOffset ) == 'number'){
    // Netscape
    return window.pageYOffset; 
  } else if( document.body && (document.body.scrollTop) || navigator.appName=="Microsoft Internet Explorer") {
    // DOM
    return document.body.scrollTop;  
  } else if( document.documentElement && (document.documentElement.scrollTop) ) {
     // Internet Explorer 6
    return document.documentElement.scrollTop;
  }
}

function hideordisplay(id) { // inverser l'affichage d'un block

	return document.getElementById(id).style.display = (document.getElementById(id).style.display == 'block') ? 'none' : 'block';

}

function hide(id) { // cacher un block

	return document.getElementById(id).style.display = 'none';

}

function display(id) { // afficher un block

	return document.getElementById(id).style.display = 'block';

}

/*
	[Debut] Caractères restants
*/
var ns6=document.getElementById&&!document.all

function restrictinput(maxlength,e,placeholder){
if (window.event&&event.srcElement.value.length>=maxlength)
return false
else if (e.target&&e.target==eval(placeholder)&&e.target.value.length>=maxlength){
var pressedkey=/[a-zA-Z0-9\.\,\/]/ 
if (pressedkey.test(String.fromCharCode(e.which)))
e.stopPropagation()
}
}

function countlimit(maxlength,e,placeholder){
var theform=eval(placeholder)
var lengthleft=maxlength-theform.value.length
var placeholderobj=document.all? document.all[placeholder] : document.getElementById(placeholder)
if (window.event||e.target&&e.target==eval(placeholder)){
if (lengthleft<0)
theform.value=theform.value.substring(0,maxlength)
placeholderobj.innerHTML=lengthleft
}
}
function displaylimit(thename, theid, thelimit){
var theform=theid!=""? document.getElementById(theid) : thename
var limit_text='<strong><span id="'+theform.toString()+'">'+thelimit+'</span></strong> caractères restants.'
if (document.all||ns6)
document.write(limit_text)
if (document.all){
eval(theform).onkeypress=function(){ return restrictinput(thelimit,event,theform)}
eval(theform).onkeyup=function(){ countlimit(thelimit,event,theform)}
}
else if (ns6){
document.body.addEventListener('keypress', function(event) { restrictinput(thelimit,event,theform) }, true); 
document.body.addEventListener('keyup', function(event) { countlimit(thelimit,event,theform) }, true); 
}
}
/*
	[Fin] Caractères restants
*/