swapbanner=function(whichimage){
	var whichimage=parseInt(whichimage),whichimage=((whichimage<1)?1:((whichimage>6)?6:whichimage)),colorarray=['000000','c7ddff','0f0e14','30271c','bc7a3f','4f6fa7','18171d'];
	document.write('<style type="text/css">#center { background-color: #'+colorarray[whichimage]+'; background-image: url(/councils/sustainability/images/backgrounds/nature/nature_'+whichimage+'.jpg); }</style>');
}