// JavaScript Document
function setError(id){
    document.getElementById(id).style.color = '#ff0000';
}

function unsetError(id){
    document.getElementById(id).style.color = '#000000';
}

function valMail(mail){
    if (!mail.match(/^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,3})$/))
	   return false;
    return true;
}

function validate(ids){
    var error = true;
	var i = 0;
    var fields = ids.split(',');
	var len = fields.length;
	
	for (i=0;i<len;i++){
        if (document.getElementById(fields[i]).value == ''){
		   setError('er_'+fields[i]);
		   error = false;
		}else
		   unsetError('er_'+fields[i]);
	}
	return error;
}