var backImage = new Array();
var backColor = new Array();

backImage[1] = "/img/main/bg_scooter.jpg";
backImage[2] = "/img/main/bg_moto.jpg";
backImage[3] = "/img/main/bg_quadro.jpg";

backColor[1] = "#112106";
backColor[2] = "#373737";
backColor[3] = "#201907";

function changeBG(whatNumber){
	if (document.body){
		document.body.bgColor = backColor[whatNumber];
		document.body.background = backImage[whatNumber];
		
		for (i=1; i<4; i++) {
			document.getElementById("what_item_" + i).style.display = 'block';	
			document.getElementById("what_item_" + i + "_on").style.display = 'none';
		}

		document.getElementById("what_item_" + whatNumber).style.display = 'none';
		document.getElementById("what_item_" + whatNumber + "_on").style.display = 'block';

		document.body
	}
}