var actualImage = new String("b1");
var oldImage = new String("b1");

var actual = new String("b1");
var old = new String("b1");

if (document.images) {

        var b1on = new Image();
        b1on.src = "../img/nBut_a.gif";
        var b1off = new Image();
        b1off.src = "../img/nBut.gif";

        var b2on = new Image();
        b2on.src = "../img/nBut_a.gif";
        var b2off = new Image();
        b2off.src = "../img/nBut.gif";
		
        var b3on = new Image();
        b3on.src = "../img/nBut_a.gif";
        var b3off = new Image();
        b3off.src = "../img/nBut.gif";

        var b4on = new Image();
        b4on.src = "../img/nBut_a.gif";
        var b4off = new Image();
        b4off.src = "../img/nBut.gif";

        var b5on = new Image();
        b5on.src = "../img/nBut_a.gif";
        var b5off = new Image();
        b5off.src = "../img/nBut.gif";

}



function img_act(imgName) {
        if (document.images) {
                if(imgName != actualImage) { 
                        imgOn = eval(imgName + "on.src");
                        document [imgName].src = imgOn;
                }
                else{
                        imgOn = eval(imgName + "on.src");
                        document [imgName].src = imgOn;
                }
        }
}

function img_inact(imgName) {
        if (document.images) {
                if(imgName != actualImage) {
                        imgOff = eval(imgName + "off.src");
                        document [imgName].src = imgOff;
                }
                else{
                        imgOff=eval(imgName + "off.src");
                        document[imgName].src = imgOn;
               }
        }
}

function img_set(imgName) {
        if(document.images) {
                oldImage = actualImage;
                actualImage = imgName;
                img_inact(oldImage);
                img_act(actualImage);
        }
}

function changeFrame8(URL1,F1) {  
		parent.frames[F1].location.href=URL1;	
}

function changeFrame0678(URL1,F1,URL2,F2,URL3,F3,URL4,F4) {  
		parent.frames[F1].location.href=URL1;
		parent.frames[F2].location.href=URL2;
		parent.frames[F3].location.href=URL3;
		parent.frames[F4].location.href=URL4;
}