function mouseOver1()
{
document.getElementById("b1").src="../images/packages/realestatetour/menu/b1b.jpg";
}
function mouseOut1()
{
document.getElementById("b1").src="../images/packages/realestatetour/menu/b1a.jpg";
}

function mouseOver2()
{
document.getElementById("b2").src="../images/packages/realestatetour/menu/b2b.jpg";
}
function mouseOut2()
{
document.getElementById("b2").src="../images/packages/realestatetour/menu/b2a.jpg";
}

function mouseOver3()
{
document.getElementById("b3").src="../images/packages/realestatetour/menu/b3b.jpg";
}
function mouseOut3()
{
document.getElementById("b3").src="../images/packages/realestatetour/menu/b3a.jpg";
}


function mouseOver4()
{
document.getElementById("b4").src="../images/packages/realestatetour/menu/b4b.jpg";
}
function mouseOut4()
{
document.getElementById("b4").src="../images/packages/realestatetour/menu/b4a.jpg";
}