var ua = navigator.userAgent.toLowerCase();

var isOP = (ua.indexOf('opera') 	!= -1);
var isIE = (ua.indexOf('msie') 		!= -1 && !isOP && (ua.indexOf('webtv') == -1) );
var isFF = (ua.indexOf('firefox') != -1);

function setSelectOptions(the_form, the_select, do_check)
{
    var selectObject = document.forms[the_form].elements[the_select];
    var selectCount  = selectObject.length;

    for (var i = 0; i < selectCount; i++) {
        selectObject.options[i].selected = do_check;
    } // end for

    return true;
} // end of the 'setSelectOptions()' function

function ChangeVisible(item, type) {
	if (isIE) {
		type = 'block';
	}
	var module = document.getElementById(item);

	if (module.style.display == 'none' || module.style.display == '') {
		ShowItem(item,type);
	}
	else {
		HideItem(item);
	}
}

function HideItem(item,type) {
	document.getElementById(item).style.display = 'none';
	document.getElementById(item).style.visibility = 'hidden';
}

function ShowItem(item, type) {
	document.getElementById(item).style.display = type;
	document.getElementById(item).style.visibility = 'visible';
}