function isEMailAddr(elem) {
var str = elem.value;
var re = /^[\w-]+(\.[\w-]+)*@([\w-]+\.)+[a-zA-Z]{2,7}$/;
if (!str.match(re)) {
alert("Verify the e-mail address format.");
setTimeout("focusElement('" + elem.form.name + "', '" + elem.name + "')", 0);
return false;
} else {
return true;
}
}