function valider() {
		var ok=1;
		c="";
		if (document.form.soc.value==0) {
			c="Please fill in your company name.\n";
			ok=0;
		}
		if (document.form.nom.value==0) {
			c=c+"Please fill in your name.\n";
			ok=0;
		}
		if ((document.form.mail.value.indexOf("@")<1)||(document.form.mail.value.indexOf(".")<3)) {
			c=c+"Please enter a valid email address.\n";
			ok=0;
		}
		if (document.form.mess.value==0) {
			c=c+"Please fill in your message.";
			ok=0;
		}
		if (ok==0){
			alert(c);
			return false;}
	}