/*
*
*
*  This file contains general Utility methods around modification of HTML controls. 
*
*/


/*
*
* This section contains methods related to HTML controls
*/

// return the value of the radio button that is checked
// return an empty string if none are checked, or
// there are no radio buttons
function getCheckedValue(radioObj) {
    if (!radioObj)
        return "";
    var radioLength = radioObj.length;
    if (radioLength == undefined)
        if (radioObj.checked)
        return radioObj.value;
    else
        return "";
    for (var i = 0; i < radioLength; i++) {
        if (radioObj[i].checked) {
            return radioObj[i].value;
        }
    }
    return "";
}

// set the radio button with the given value as being checked
// do nothing if there are no radio buttons
// if the given value does not exist, all the radio buttons
// are reset to unchecked
function setCheckedValue(radioObj, newValue) {
    if (!radioObj)
        return;
    var radioLength = radioObj.length;
    if (radioLength == undefined) {
        radioObj.checked = (radioObj.value == newValue.toString());
        return;
    }
    for (var i = 0; i < radioLength; i++) {
        radioObj[i].checked = false;
        if (radioObj[i].value == newValue.toString()) {
            radioObj[i].checked = true;
        }
    }
}

/*
*
*  This section includes manupulation of HTML tables. 
*/
function HideRow(row) {
    row.style.display = 'none';
}

function ShowRow(row) {
    row.style.display = '';
}