// JavaScript Document
    function newImage(arg) {
    	if (document.images) {
    		rslt = new Image();
    		rslt.src = arg;
    		return rslt;
    	}
    }
    
    function changeImages() {
    	if (document.images && (preloadFlag == true)) {
    		for (var i=0; i<changeImages.arguments.length; i+=2) {
    			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
    		}
    	}
    }
    
    var preloadFlag = false;
    function preloadImages() {
    	if (document.images) {
    		us_map_01_ImageMap_03_over = newImage("img/us_map_01-ImageMap_03_over.gif");
    		us_map_01_ImageMap_04_over = newImage("img/us_map_01-ImageMap_04_over.gif");
    		us_map_01_ImageMap_05_over = newImage("img/us_map_01-ImageMap_05_over.gif");
    		us_map_01_ImageMap_06_over = newImage("img/us_map_01-ImageMap_06_over.gif");
    		us_map_01_ImageMap_07_over = newImage("img/us_map_01-ImageMap_07_over.gif");
    		us_map_01_ImageMap_08_over = newImage("img/us_map_01-ImageMap_08_over.gif");
    		us_map_01_ImageMap_09_over = newImage("img/us_map_01-ImageMap_09_over.gif");
    		us_map_01_ImageMap_10_over = newImage("img/us_map_01-ImageMap_10_over.gif");
    		us_map_01_ImageMap_01_over = newImage("img/us_map_01-ImageMap_01_over.gif");
    		us_map_01_ImageMap_02_over = newImage("img/us_map_01-ImageMap_02_over.gif");
    		preloadFlag = true;
    	}
    }