var imageFiles_il_4 = new Array();
imageFiles_il_4['0'] = new Array ('_images/il_2007.gif', '_images/il_2007Mouseover.gif');
imageFiles_il_4['1'] = new Array ('_images/il_January.gif', '_images/il_JanuaryMouseover.gif');
imageFiles_il_4['2'] = new Array ('_images/il_February.gif', '_images/il_FebruaryMouseover.gif');
imageFiles_il_4['3'] = new Array ('_images/il_March.gif', '_images/il_MarchMouseover.gif');
imageFiles_il_4['4'] = new Array ('_images/il_April.gif', '_images/il_AprilMouseover.gif');
imageFiles_il_4['5'] = new Array ('_images/il_May.gif', '_images/il_MayMouseover.gif');
imageFiles_il_4['6'] = new Array ('_images/il_June.gif', '_images/il_JuneMouseover.gif');
imageFiles_il_4['7'] = new Array ('_images/il_July.gif', '_images/il_JulyMouseover.gif');
imageFiles_il_4['8'] = new Array ('_images/il_August_.gif', '_images/il_August_Mouseover.gif');
imageFiles_il_4['9'] = new Array ('_images/il_2006.gif', '_images/il_2006Mouseover.gif');
imageFiles_il_4['10'] = new Array ('_images/il_February.gif', '_images/il_FebruaryMouseover.gif');
imageFiles_il_4['11'] = new Array ('_images/il_March.gif', '_images/il_MarchMouseover.gif');
imageFiles_il_4['12'] = new Array ('_images/il_August.gif', '_images/il_AugustMouseover.gif');
imageFiles_il_4['13'] = new Array ('_images/il_September.gif', '_images/il_SeptemberMouseover.gif');
imageFiles_il_4['14'] = new Array ('_images/il_July.gif', '_images/il_JulyMouseover.gif');
imageFiles_il_4['15'] = new Array ('_images/il_October.gif', '_images/il_OctoberMouseover.gif');
imageFiles_il_4['16'] = new Array ('_images/il_November.gif', '_images/il_NovemberMouseover.gif');
imageFiles_il_4['17'] = new Array ('_images/il_December.gif', '_images/il_DecemberMouseover.gif');

function image_on_il_4 (position) {
   var doc = eval("document.imageil_4" + position);
   doc.src = imageFiles_il_4[position][1];
}

function image_off_il_4 (position) {
   var doc = eval("document.imageil_4" + position);
   doc.src = imageFiles_il_4[position][0];
}