function goodchars(goods)
				{
					var key, keychar;
					key = window.event.keyCode;
					
					if (key == null) return true;
					
					// get character
					keychar = String.fromCharCode(key);
					keychar = keychar.toLowerCase();
					goods = goods.toLowerCase();
					
					// check goodkeys
					if (goods.indexOf(keychar) != -1)
						return true;
					
					
					// control keys
					if ( key==null || key==0 || key==8 || key==9 || key==13 || key==27 )
						return true;
					
					// else return false
					return false;
				}			
					function lightup(imageobject, opacity){
					if (navigator.appName.indexOf("Netscape")!=-1&&parseInt(navigator.appVersion)>=5)
					{
						document[imageobject].style.MozOpacity=opacity/100;
						 
					}
					else if (navigator.appName.indexOf("Microsoft")!=-1&&parseInt(navigator.appVersion)>=4)
					{
					document[imageobject].filters.alpha.opacity=opacity;
					}
					}
				
				
						
			<!--
			function MM_swapImgRestore() { //v3.0
			  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
			}
			
			function MM_preloadImages() { //v3.0
			  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
			    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
			    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
			}
			
			function MM_findObj(n, d) { //v4.01
			  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
			    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
			  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
			  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
			  if(!x && d.getElementById) x=d.getElementById(n); return x;
			}
			
			function MM_swapImage() { //v3.0
			  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
			   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
			}
			//-->


				function checkmail(email) 
				{
				 var reg = /^[a-z0-9._-]+@[a-z0-9.-]{2,}[.][a-z]{2,4}$/
				 return (reg.exec(email)!=null)
				}
				// Teste le contenu des champs du form avant submit
				function test(mail,alert2) 
				{
					if(!checkmail(mail.value)) {
				    alert(alert2); mail.focus(); return false;
			 	}
				 return true;
				}