function mouseOver()
{
document.getElementById("b1").src="images/1-ban1-2.jpg"
}
function mouseOut()
{
document.getElementById("b1").src="images/1-ban1.jpg"
}

function mouseOver2()
{
document.getElementById("b2").src="images/1-ban2-2.jpg"
}
function mouseOut2()
{
document.getElementById("b2").src="images/1-ban2.jpg"
}

function mouseOver3()
{
document.getElementById("b3").src="images/1-ban3-2.jpg"
}
function mouseOut3()
{
document.getElementById("b3").src="images/1-ban3.jpg"
}

function mouseOver4()
{
document.getElementById("b4").src="images/1-ban5-2.jpg"
}
function mouseOut4()
{
document.getElementById("b4").src="images/1-ban5.jpg"
}