if (document.images) {       
            img01up = new Image();      
            img01up.src = "../../img/m_eiwat.gif"; 
            img02up = new Image();      
            img02up.src = "../img/m_overview.gif"; 
            img03up = new Image();      
            img03up.src = "../img/m_product.gif"; 
            img04up = new Image();      
            img04up.src = "../img/m_business.gif"; 
            img05up = new Image();      
            img05up.src = "../img/m_peformance.gif"; 
            img06up = new Image();      
            img06up.src = "../img/m_contactus.gif"; 
            img11up = new Image();      
            img11up.src = "../../img/back2_1.gif"; 

            img01dn = new Image();      
            img01dn.src = "../../img/m_eiwat2.gif"; 
            img02dn = new Image();      
            img02dn.src = "../img/m_overview2.gif"; 
            img03dn = new Image();      
            img03dn.src = "../img/m_product2.gif"; 
            img04dn = new Image();      
            img04dn.src = "../img/m_business2.gif"; 
            img05dn = new Image();      
            img05dn.src = "../img/m_peformance2.gif"; 
            img06dn = new Image();      
            img06dn.src = "../img/m_contactus2.gif"; 
            img11dn = new Image();      
            img11dn.src = "../../img/back2_2.gif"; 
        }



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

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

function eiwatMouseOver(){
        imgOn('img01');
}

function eiwatMouseOut(){
        imgOff('img01');
}

function overviewMouseOver(){
        imgOn('img02');
}

function overviewMouseOut(){
        imgOff('img02');
}

function productMouseOver(){
        imgOn('img03');
}

function productMouseOut(){
        imgOff('img03');
}

function businessMouseOver(){
        imgOn('img04');
}

function businessMouseOut(){
        imgOff('img04');
}

function peformanceMouseOver(){
        imgOn('img05');
}

function peformanceMouseOut(){
        imgOff('img05');
}

function contactusMouseOver(){
        imgOn('img06');
}

function contactusMouseOut(){
        imgOff('img06');
}

function backMouseOver(){
        imgOn('img11');
}

function backMouseOut(){
        imgOff('img11');
}