accepte french characters

[sethupathy]

this is my code and it wont accept french caracter like é à l' can someone help pls it keeps poping to enter again

 

function isAlphabet(elem, helperMsg){

var alphaExp = /^[a-zA-Z ]+$/;

if(elem.value.match(alphaExp)){

return true;

}else{

alert(helperMsg);

elem.focus();

return false;