function button_index_Over()
{
document.getElementById("b1").src ="images/button_index_on.gif";
}
function button_index_Out()
{
document.getElementById("b1").src ="images/button_index_off.gif";
}
function button_description_Over()
{
document.getElementById("b2").src ="images/button_description_on.gif";
}
function button_description_Out()
{
document.getElementById("b2").src ="images/button_description_off.gif";
}
function button_portfolio_Over()
{
document.getElementById("b3").src ="images/button_portfolio_on.gif";
}
function button_portfolio_Out()
{
document.getElementById("b3").src ="images/button_portfolio_off.gif";
}
function button_articles_Over()
{
document.getElementById("b4").src ="images/button_articles_on.gif";
}
function button_articles_Out()
{
document.getElementById("b4").src ="images/button_articles_off.gif";
}
function button_contacts_Over()
{
document.getElementById("b5").src ="images/button_contacts_on.gif";
}
function button_contacts_Out()
{
document.getElementById("b5").src ="images/button_contacts_off.gif";
}
function button_guestbook_Over()
{
document.getElementById("b6").src ="images/button_guestbook_on.gif";
}
function button_guestbook_Out()
{
document.getElementById("b6").src ="images/button_guestbook_off.gif";
}