/**
 * Timeline Rollover Javascript
 */

var curYear = null;

function setCurYear(year) 
{
    curYear = year;
}

function swapTimelineRollover(year)
{
    var oldYearId = 'rollover_'+curYear;
    var newYearId = 'rollover_'+year;
    
    
    var oldYear = document.getElementById(oldYearId);
    var newYear = document.getElementById(newYearId);
    
    oldYear.style.display = 'none';
    newYear.style.display = 'block';
    
    curYear = year;
}