var polec_znajomemu = new Image();
var polec_znajomemu_over = new Image();
polec_znajomemu.src = "images/structure/emailblue.jpg"
polec_znajomemu_over.src = "images/structure/emailblue-over.jpg"

function MouseOver(imageName){
	document.images[imageName].src = eval(imageName + "_over.src");
}
function MouseOut(imageName){
	document.images[imageName].src = eval(imageName + ".src");
}