function hideShow(divID)
{
var d = document.getElementById(divID);
d.style.display =(d.style.display != 'none' )? 'none':'block';
}

/*
function hideShow(divID) {
	var div = document.getElementById(divID);
	div.className = (div.className == 'visible') ? 'invisible' : 'visible';
}

//document.getElementById(divID).style.display=(document.getElementById(divID).style.display == 'none' || document.getElementById(divID).style.display == '')?'block':'none';

*/
//  Inizio cambio background

var backImage = new Array();
backImage[0] = "images/bg_texture.gif";
backImage[1] = "images/bg_texture_1.gif";
backImage[2] = "images/bg_texture_2.gif";
backImage[3] = "images/bg_texture_3.gif";
backImage[4] = "images/bg_texture_4.gif";

function changeBGImage(whichImage){
	if (document.body){
		document.body.background = backImage[whichImage];
	}
}

function checkbg(){
	if (document.body){
		window.document.body.background=backImage[0]; 
	}
}
//  Fine cambio background