if (document.images) {
	common = new Image();           // Active images
	common.src = "images/comm1.jpg";
	commoff = new Image();          // Inactive images
	commoff.src = "images/comm2.jpg";

	listingson = new Image();           // Active images
	listingson.src = "images/listings1.jpg";
	listingsoff = new Image();          // Inactive images
	listingsoff.src = "images/listings2.jpg";
	
	agentson = new Image();           // Active images
	agentson.src = "images/agents1.jpg";
	agentsoff = new Image();          // Inactive images
	agentsoff.src = "images/agents2.jpg";

	
	residentialon = new Image();           // Active images
	residentialon.src = "images/icon-residential.gif";
	residentialoff = new Image();          // Inactive images
	residentialoff.src = "images/icon-residential2.gif";

	acreageon = new Image();           // Active images
	acreageon.src = "images/icon-acreage.gif";
	acreageoff = new Image();          // Inactive images
	acreageoff.src = "images/icon-acreage2.gif";
	
	lotson = new Image();           // Active images
	lotson.src = "images/icon-lots.gif";
	lotsoff = new Image();          // Inactive images
	lotsoff.src = "images/icon-lots2.gif";
		
	commercialon = new Image();           // Active images
	commercialon.src = "images/icon-comm.gif";
	commercialoff = new Image();          // Inactive images
	commercialoff.src = "images/icon-comm2.gif";		

	wateron = new Image();           // Active images
	wateron.src = "images/icon-water.gif";
	wateroff = new Image();          // Inactive images
	wateroff.src = "images/icon-water2.gif";		
	
	}
    function imgOn(imgName) {
            if (document.images) {
                document[imgName].src = eval(imgName + "off.src");
            }
    }
    function imgOff(imgName) {
            if (document.images) {
                document[imgName].src = eval(imgName + "on.src");        
            }
    }