var slideshow_width='760px' ;
var slideshow_height='192px' ;

image0="images/flash.gif";
image1="images/dulux.gif";

function imgshow(){
rnumb = Math.floor(Math.random()*2);
var imger = eval("image"+rnumb);
var flicker = document.getElementById('showimg');
flicker.src = imger;

}
var slideshow_width='760px' ;
var slideshow_height='192px' ;

image0="images/flash.gif";
image1="images/dulux.gif";

function imgshow(){
rnumb = Math.floor(Math.random()*2);
var imger = eval("image"+rnumb);
var flicker = document.getElementById('showimg');
flicker.src = imger;
}