function tester() {
//var nom = document.crearep.nomrep.value;
//alert(nom)
var expreg = /^[a-zA-Z0-9_ -]+$/;
if(!expreg.test(document.crearep.nomrep.value))
	{
	alert("The folder's name should not have any special character (,.;:/\%^...) nor of accentuated characters.")
	return false
	}
}

function tester2() {
//var nom = document.crearep.nomrep.value;
//alert(nom)
var expreg = /^[a-zA-Z0-9_ -]+$/;
if(!expreg.test(document.rename.nomrep.value))
	{
	alert("The folder's name should not have any special character (,.;:/\%^...) nor of accentuated characters.")
	return false
	}
}