function preload()
{
if (document.images){
up1=new Image(79,29)
up1.src="images/tbar1up.jpg"
dn1=new Image(79,29)
dn1.src="images/tbar1dn.jpg"
up3=new Image(50,20)
up3.src="images/tbar3up.jpg"
dn3=new Image(50,20)
dn3.src="images/tbar3dn.jpg"
up5=new Image(50,79)
up5.src="images/tbar5up.jpg"
dn5=new Image(50,79)
dn5.src="images/tbar5dn.jpg"
up7=new Image(50,20)
up7.src="images/tbar7up.jpg"
dn7=new Image(50,20)
dn7.src="images/tbar7dn.jpg"
up9=new Image(50,20)
up9.src="images/tbar9up.jpg"
dn9=new Image(50,20)
dn9.src="images/tbar9dn.jpg"
}
}
 
function filter(imagename,objectsrc)
{	
if (document.images){
document.images[imagename].src=eval(objectsrc+".src")
}
}