Flash and php

1

i have created a menu for a site i am making for a friend, http://www.ontherocks.me.uk/index2.php

this is the actionscript for the menu:


speed = 5;
target = button1._x;

button1.onRelease = function() {
    target = button1._x;
    getURL("http://www.ontherocks.me.uk/index2.php?go=home","_self");
}
button2.onRelease = function() {
    target = button2._x;
    getURL("http://www.ontherocks.me.uk/index2.php?go=bio","_self");
}
button3.onRelease = function() {
    target = button3._x;
    getURL("http://www.ontherocks.me.uk/index2.php?go=gear","_self");
}
button4.onRelease = function() {
    target = button4._x;
    getURL("http://www.ontherocks.me.uk/index2.php?go=gigs","_self");
}
button5.onRelease = function() {
    target = button5._x;
    getURL("http://www.ontherocks.me.uk/index2.php?go=media","_self");
}
button6.onRelease = function() {
    target = button6._x;
    getURL("http://www.ontherocks.me.uk/index2.php?go=contact","_self");
}

this.onEnterFrame = function() {
    current._x += (target-current._x)/speed;
};

when you click a link on the menu, the bar slides to the new location which is what i want but once the page has loaded it goes back to its original position on home. is there a way i can stop it doing this? so that when i click on ‘gigs’ the white block stays over gigs etc

thanks alot