function img_swapper(){
var now = new Date();
if ((now.getSeconds() >= 0 ) && ( now.getSeconds() <= 9)){
	document.body.style.backgroundImage = "url(mainimg/testata_bkg00.jpg)";
	document.body.style.backgroundRepeat = "repeat"; 
}
if ((now.getSeconds() >= 10 ) && ( now.getSeconds() <= 19)){
	document.body.style.backgroundImage = "url(mainimg/testata_bkg01.jpg)";
	document.body.style.backgroundRepeat = "repeat"; 
}
if ((now.getSeconds() >= 20 ) && ( now.getSeconds() <= 29)){
	document.body.style.backgroundImage = "url(mainimg/testata_bkg02.jpg)";
	document.body.style.backgroundRepeat = "repeat"; 
}
if ((now.getSeconds() >= 30 ) && ( now.getSeconds() <= 39)){
	document.body.style.backgroundImage = "url(mainimg/testata_bkg03.jpg)";
	document.body.style.backgroundRepeat = "repeat"; 
}
if ((now.getSeconds() >= 40 ) && ( now.getSeconds() <= 49)){
	document.body.style.backgroundImage = "url(mainimg/testata_bkg04.jpg)";
	document.body.style.backgroundRepeat = "repeat"; 
}
if ((now.getSeconds() >= 50 ) && ( now.getSeconds() <= 59)){
	document.body.style.backgroundImage = "url(mainimg/testata_bkg05.jpg)";
	document.body.style.backgroundRepeat = "repeat"; 
}
}