<!--// LEFT NAV

var dir = '/images/nav/';

var preloadFlag = false;

//preload 
function doPreload() {  
    if (document.images) {
        bio_over = new Image(); bio_over.src = dir + "bio_over.gif";
        news_over = new Image(); news_over.src = dir + "news_over.gif";
        journal_over = new Image(); journal_over.src = dir + "journal_over.gif";
		contact_over = new Image(); contact_over.src = dir + "contact_over.gif";
        links_over = new Image(); links_over.src = dir + "links_over.gif";  
		      

	    return (preloadFlag = true);  
    }
}
if (document.images) {  
	bio_off = new Image(); bio_off.src = dir + "bio_off.gif";
    news_off = new Image(); news_off.src = dir + "news_off.gif";
    journal_off = new Image(); journal_off.src = dir + "journal_off.gif";
	contact_off = new Image(); contact_off.src = dir + "contact_off.gif";
    links_off = new Image(); links_off.src = dir + "links_off.gif";  
	
	
	bio_on = new Image(); bio_on.src = dir + "bio_on.gif";
    news_on = new Image(); news_on.src = dir + "news_on.gif";
    journal_on = new Image(); journal_on.src = dir + "journal_on.gif";
	contact_on = new Image(); contact_on.src = dir + "contact_on.gif";
    links_on = new Image(); links_on.src = dir + "links_on.gif";  
	
}

//rollover code
function rollIn(imgName) {
    if (document.images && (preloadFlag == true)) {
        document[imgName].src = eval(imgName + "_over.src");
    }
}

function rollOut(imgName) {  
    if (document.images){
        document[imgName].src = eval(imgName + "_off.src");
    }
}


// -->