function load_images() {
	pic= new Array();
	pic[0]=new Image();
	pic[0].src="images/ofertar.gif";
	pic[1]=new Image();
	pic[1].src="images/demor.gif";
	pic[2]=new Image();
	pic[2].src="images/pytanier.gif";
	pic[3]=new Image();
	pic[3].src="images/newsletterr.gif";
	

}
function on(x) {
	cel="box_text_"+x;
	document.getElementById(cel).style.background='url(images/'+x+'r.gif) right bottom no-repeat';
}
function off(x) {
	cel="box_text_"+x;
	document.getElementById(cel).style.background='url(images/'+x+'.gif) right bottom no-repeat';
}