var picts0=new Image();picts0.src="images/pict1.gif";
var picts1=new Image();picts1.src="images/pict2.gif";

function ov(a)
{
var t=eval("document.all.pict"+a);
t.src=picts1.src
}

function outs(a)
{
var t=eval("document.all.pict"+a);
t.src=picts0.src
}