// Loads and toggles on/off section tabs

var loc = "http://library.duke.edu/imgs/rbmscl/tabs/";
var labels = new Array('research_tab','services_tab','about_tab');
var offs = new Array();
var ons = new Array();
var menuflag = 0;

function loadTabs () {
	var n;	
	if ( document.images ) {
		for ( n=0; n < labels.length; n++ ) {
			offs[labels[n]] = new Image();
			offs[labels[n]].src = loc + labels[n] + "_off.gif";
			ons[labels[n]] = new Image();
			ons[labels[n]].src = loc + labels[n] + "_on.gif";
		}
		menuflag = 1;
	}
}

function OMOv ( id ) {
	if ( document.images ) {
		if ( menuflag ) {
			document.images[id].src = ons[id].src;
		}
	}
}

function OMOu ( id ) {
	if ( document.images ) {
		if ( menuflag ) {
			document.images[id].src = offs[id].src;
		}
	}
}