disks = new Image(600,600)
disks.src = "pictures/index_disks.jpg"
function emphdisks() {
document.frame.src = disks.src; return true;
}

CV = new Image(600,600)
CV.src = "pictures/index_CV.jpg"
function emphCV() {
document.frame.src = CV.src; return true;
}

COSMOS = new Image(600,600)
COSMOS.src = "pictures/index_COSMOS.jpg"
function emphCOSMOS() {
document.frame.src = COSMOS.src; return true;
}

Panoramas = new Image(600,600)
Panoramas.src = "pictures/index_widefield.jpg"
function emphPano() {
document.frame.src = Panoramas.src; return true;
}

radioIR = new Image(600,600)
radioIR.src = "pictures/index_radioIR.jpg"
function emphradioIR() {
document.frame.src = radioIR.src; return true;
}

Eurasia =  new Image(600,600)
Eurasia.src = "pictures/index_Eurasia.jpg"
function emphEurasia() {
document.frame.src = Eurasia.src; return true;
}

links =  new Image(600,600)
links.src = "pictures/index_links.jpg"
function emphlinks() {
document.frame.src = links.src; return true;
}

grey = new Image(600,600)
grey.src = "pictures/index_mosaic.jpg"

function original() {
document.frame.src = grey.src; return true; 
}