Image1= new Image(0,0)
Image1.src = "paychart1a.gif"
Image2 = new Image(0,0)
Image2.src = "paychart1b.gif"

function SwapOuta() {
document.a.src = Image2.src; return true;
}

function SwapBacka() {
document.a.src = Image1.src; return true;
}

Image3= new Image(0,0)
Image3.src = "paychart2a.gif"
Image4 = new Image(0,0)
Image4.src = "paychart2b.gif"

function SwapOutb() {
document.b.src = Image4.src; return true;
}

function SwapBackb() {
document.b.src = Image3.src; return true;
}