function button_over(image_num){
	eval("document.button_" + image_num + ".src='" + "http://www.federationsupplies.com.au/images/buttons-" + image_num + "-over.gif'");
}

function button_out(image_num){
	eval("document.button_" + image_num + ".src='" + "http://www.federationsupplies.com.au/images/buttons-" + image_num + ".gif'");
}