function switchRegion(strDiv1,bolVisible1,strDiv2,bolVisible2,strDiv3,bolVisible3){

    //identify the element based on browser type
    objElement1 = document.getElementById(strDiv1);
    objElement2 = document.getElementById(strDiv2);
    objElement3 = document.getElementById(strDiv3);
    if(bolVisible1) {
        objElement1.style.visibility = "visible";
        objElement2.style.visibility = "hidden";
        objElement3.style.visibility = "hidden";
    } 
    if(bolVisible2) {
        objElement1.style.visibility = "hidden";
        objElement2.style.visibility = "visible";
        objElement3.style.visibility = "hidden";
    }
    if(bolVisible3) {
        objElement1.style.visibility = "hidden";
        objElement2.style.visibility = "hidden";
        objElement3.style.visibility = "visible";
    }
}