var mzsp_westSelected = false;
var mzsp_eastSelected = false;
var mzsp_bothSelected = false;

function mzsp_selectWest() {
    if (mzsp_westSelected) return;

    var eastLen = document.summerForm.eastTuition.length;
    var westLen = document.summerForm.westTuition.length;
    
    for (i=0; i<eastLen; i++) {
        document.summerForm.eastTuition[i].checked = false;
        document.summerForm.eastTuition[i].disabled = true;
    }

    for (i=0; i<westLen; i++) {
        //document.summerForm.westTuition[i].checked = false;
        document.summerForm.westTuition[i].disabled = false;
    }
    
    mzsp_westSelected = true;
    mzsp_eastSelected = false;
    mzsp_bothSelected = false;

}

function mzsp_selectEast() {
    if (mzsp_eastSelected) return;

    var eastLen = document.summerForm.eastTuition.length;
    var westLen = document.summerForm.westTuition.length;
    
    for (i=0; i<eastLen; i++) {
        //document.summerForm.eastTuition[i].checked = false;
        document.summerForm.eastTuition[i].disabled = false;
    }

    for (i=0; i<westLen; i++) {
        document.summerForm.westTuition[i].checked = false;
        document.summerForm.westTuition[i].disabled = true;
    }
    
    mzsp_eastSelected = true;
    mzsp_westSelected = false;
    mzsp_bothSelected = false;

}

function mzsp_selectBoth() {
    if (mzsp_bothSelected) return;

    var eastLen = document.summerForm.eastTuition.length;
    var westLen = document.summerForm.westTuition.length;
    
    for (i=0; i<eastLen; i++) {
        //document.summerForm.eastTuition[i].checked = false;
        document.summerForm.eastTuition[i].disabled = false;
    }

    for (i=0; i<westLen; i++) {
        //document.summerForm.westTuition[i].checked = false;
        document.summerForm.westTuition[i].disabled = false;
    }
    
    mzsp_eastSelected = false;
    mzsp_westSelected = false;
    mzsp_bothSelected = true;

}