if (document.images) {
// Active Images
    imghospital_1on = new Image();                       
    imghospital_1on.src = "images/splash/splash-1_06-on.gif";  
    imghospital_2on = new Image();                       
    imghospital_2on.src = "images/splash/splash-1_07-on.gif";  

// Inactive Images
    imghospital_1off = new Image();                       
    imghospital_1off.src = "images/splash/splash-1_06-off.gif";  
    imghospital_2off = new Image();                       
    imghospital_2off.src = "images/splash/splash-1_07-off.gif";   
}

// Function to 'activate' images.
function imgMenuOn(imgName) {
	if (document.images) {
            document[imgName].src = eval(imgName + "on.src");
        }
}

// Function to 'deactivate' images.
function imgMenuOff(imgName) {
        if (document.images) {
            document[imgName].src = eval(imgName + "off.src");
        }
}