IE6 PNG Issue Fix?

[R4N_S_S]

Guys,

I have 3 png images with transparent backgrounds inserted in the HTML and want these to show correctly in IE6 as there is a grey background to these.

Anyone got a decent PNG issue fix I can use here.

[R4N_S_S]

also to add they are positioned absolutely as they represent the world and the 3 regiosn (america, europe, asia)

they also overlap in some instances due to how the countries merge together