function changeBG(state, element) {	
		if(state == 'on') {	
			if(element == 'zone1') { document.getElementById('zones').style.background = "url('http://termet.com.pl/multumpr/img/zones/zones.png') 0px -68px no-repeat";	}
			else if(element == 'zone2') { document.getElementById('zones').style.background="url('http://termet.com.pl/multumpr/img/zones/zones.png') 0px -136px no-repeat";	}
			else if(element == 'zone3') { document.getElementById('zones').style.background="url('http://termet.com.pl/multumpr/img/zones/zones.png') 0px -204px no-repeat";	}
		}
		else if(state == 'off') {
			document.getElementById('zones').style.background="url('http://termet.com.pl/multumpr/img/zones/zones.png') 0px 0px no-repeat";
		}
}


function changeBGP(state, element) {	
		if(state == 'on') {	
			if(element == 'zone1') { document.getElementById('leftZones').style.background = "url('http://termet.com.pl/multumpr/img/leftSide/zones.png') 0px -117px no-repeat";	}
			else if(element == 'zone2') { document.getElementById('leftZones').style.background="url('http://termet.com.pl/multumpr/img/leftSide/zones.png') 0px -234px no-repeat";	}
			else if(element == 'zone3') { document.getElementById('leftZones').style.background="url('http://termet.com.pl/multumpr/img/leftSide/zones.png') 0px -351px no-repeat";	}
		}
		else if(state == 'off') {
			document.getElementById('leftZones').style.background="url('http://termet.com.pl/multumpr/img/leftSide/zones.png') 0px 0px no-repeat";
		}
}