Run report on custom button using javascript in crm 2013

function OpenReport() {
    var rdlName = "Program Wise Intake.rdl"; //Replace
    var reportGuid = "F2F15B97-DD1F-E511-9E86-002590898E30"; //Replace
    var entityType = "10012"; //Replace
    var entityGuid = Xrm.Page.data.entity.getId(); 
    var url = Xrm.Page.context.getClientUrl() + "/crmreports/viewer/viewer.aspx?action=run&context=records&helpID=" + rdlName + "&id={" + reportGuid + "}&records=" + entityGuid + "&recordstype=" + entityType;
    window.open(url, null, 800, 600, true, false, null);
}