$(document).ready(function() {
    if ($("#ct100_txtLogin").text() != "") {
        $("#ct100_txtLogin").text().attr("class", "").addClass("loginfocus");
    }
    
    if ($("#ct100_txtPassword").text() != "") {
        $("#ct100_txtPassword").text().attr("class", "").addClass("passwordfocus");
    }
});

function changeClass(domId, originalClassName, className) {
    if ($("#" + domId).val() == "") {
	    $("#" + domId).attr("class", "").addClass(className);
	}
}

function checkUserCredentials() {
    var doServerValidation = false;
    var login = "";
    var password = "";
    
    var errormessage = "";
    
    login = $("#txtLogin").val();
    password = $("#txtPassword").val();
    
    $("#lblLoginClientError").empty();
    
    if ((login.length > 0)&&(password.length > 0)) {
        doServerValidation = true;
    }
    else {
        if ((login.length == 0)&&(password.length == 0)) {
           errormessage = "Inserire login e password";
           $("#txtLogin").focus();
        }
        if ((login.length == 0)&&(password.length > 0)) {
           errormessage = "Inserire la login";
           $("#txtLogin").focus();
        }
        if ((login.length > 0)&&(password.length == 0)) {
           errormessage = "Inserire la password";
           $("#txtPassword").focus();
        }
        
        if (errormessage.length > 0) {
            $("#lblLoginClientError").append(errormessage);
            $("#lblLoginClientError").show();
        }
        
        doServerValidation = false;
    }
    
    return doServerValidation;
}