function egMonthlyImage() {

    
var myImageList = [['TiogaLake', 'Tioga Lake, Ice, High Sierra'],  //Jan
                   ['BvFall', 'Bridalveil Fall in Storm, Yosemite'],  //Feb
                   ['UpperCascade', 'Upper Cascade Creek, Yosemite'],  //Mar
                   ['FiveEggs', 'Five Eggs in a Wooden Bowl'],  //Apr
                   ['AtlanticStormAcadia', 'Atlantic Storm, Schoodic Point, Maine'],  //May
                   ['GGBrNTower', 'Golden Gate Bridge, North Tower and Rocks'],  //Jun
                   ['PampasGrass', 'Pampas Grass, Carmel Highlands, California'],  //Jul
                   ['ArchPyramidForm', 'Arch, Pyramid Form, St. Louis'],  //Aug
                   ['MoonAndClouds', 'Moon and Clouds, Banff, Alberta'],  //Sep
                   ['FrostedLeaves', 'Frosted Leaves, Yosemite'],  //Oct
                   ['CabinTetons', 'Cabin, Grand Tetons'],  //Nov
                   ['SaplingInSnow', 'Sapling in Snow, Tusas Mts., Northern New Mexico']]    //Dec



    
    now = new Date
    thisYr = now.getYear()
        if (thisYr < 1900) {
            thisYr = thisYr + 1900    
        }
        
    thisMo = now.getMonth()
    
    currImage = ((12 * thisYr) + thisMo) % myImageList.length    
        
    document.writeln('<p></p>')
    document.writeln('<img src = "ar20/photos/' + myImageList[currImage][0] + 
    '\.jpg" width="500"')
    document.writeln('<p></p><p class="image_caption">')
    document.writeln(myImageList[currImage][1])
    document.writeln('</p>')            
 
}