if (document.images) {

// begin sub nav links

    sections1 = new Image
    sections1.src = 'images/common/nav_specialsections_off.gif'
    sections2 = new Image
    sections2.src = 'images/common/nav_specialsections_on.gif'

    features1 = new Image
    features1.src = 'images/common/nav_features_off.gif'
    features2 = new Image
    features2.src = 'images/common/nav_features_on.gif'

    events1 = new Image
    events1.src = 'images/common/nav_events_off.gif'
    events2 = new Image
    events2.src = 'images/common/nav_events_on.gif'

    resources1 = new Image
    resources1.src = 'images/common/nav_resources_off.gif'
    resources2 = new Image
    resources2.src = 'images/common/nav_resources_on.gif'

	// secondary pages resources hover
	resources_sec1 = new Image
    resources_sec1.src = 'images/common/nav_resources-sec_off.gif'
    resources_sec2 = new Image
    resources_sec2.src = 'images/common/nav_resources-sec_on.gif'

// end sub nav links

// begin calendar button

    calendar1 = new Image
    calendar1.src = 'images/home/button_calendar_off.gif'
    calendar2 = new Image
    calendar2.src = 'images/home/button_calendar_on.gif'

// end calendar button

 }


function chgImg(imgField,newImg) {
	if (document.images) {
		document[imgField].src= eval(newImg + ".src")
	}
}