var flag = false;

if (document.images)
{
	navs_about_on = new Image(51,20);navs_about_on.src = '/images/navs_about_on.gif';
	navs_edits_on = new Image(75,20);navs_edits_on.src = '/images/navs_edits_on.gif';
	navs_exhib_on=new Image(85,20);navs_exhib_on.src='/images/navs_exhib_on.gif';
    navs_pubs_on=new Image(104,20);navs_pubs_on.src='/images/navs_pubs_on.gif';
	navs_progs_on=new Image(157,20);navs_progs_on.src='/images/navs_progs_on.gif';
	navs_news_on = new Image(54, 20); navs_news_on.src = '/images/navs_news_on.gif';

	flag = true;
}


function msover(imgObj){
     if (flag){
                           imgObj.src=eval(imgObj.name + '_on.src');
                            }
}

function msout(imgObj){
       if (flag){
                 imgObj.src='/images/' + imgObj.name + '.gif';
                             }
}