function CtrlForm(thisform) {
		
		with (thisform) {
			var err = 0;
			var val = 0;
			html_error = '<div id="form_error">Please fill the form :<ul>';
			
			if(nom.value=="") {
			  html_error+='<li>Empty name</li>';
			  nom.focus(); 
			  err=1;
			}
			if(prenom.value=="") {
			  html_error+='<li>Empty first name</li>';
			  if (err != 1)  prenom.focus(); 
			  err=1;
			}
				
			if(adresse.value=="") {
			  if (err != 1) adresse.focus(); 
			  err=1;
			  html_error+='<li>Empty email address</li>';
			}

			if ((adresse.value.indexOf("@")>=0)&&(adresse.value.indexOf(".")>=0)) { 
			}else{
				if (err != 1) adresse.focus(); 
				err=1;
				html_error+='<li>Invalid email address</li>';
				
			}

			

			for( i = 0; i < pour.length; i++ )
			{
			if( pour[i].checked == true )
			val = pour[i].value;
			}


			if((val=="autre")&&(pour2.value=="")) {
			  if (err != 1) pour2.focus(); 
			  err=1;
			  html_error+='<li>Fill the name of the person</li>';
			}


			html_error+='</ul></div>';
			
			if(err == 1) {
				
				if (document.getElementById){
					document.getElementById("okpasok").innerHTML=html_error;
				}
				return false;
			}else{
				return true;
			}
		}

}