function swapContent(divID) {
				if (document.getElementById('contentNorth')) { document.getElementById('contentNorth').className = 'hidden'; }
				if (document.getElementById('contentSouth')) { document.getElementById('contentSouth').className = 'hidden'; }
				if (document.getElementById('contentMidlands')) { document.getElementById('contentMidlands').className = 'hidden'; }
				if (document.getElementById('contentLondon')) { document.getElementById('contentLondon').className = 'hidden'; }
				if (document.getElementById('contentNIreland')) { document.getElementById('contentNIreland').className = 'hidden'; }
				if (document.getElementById(divID)) { document.getElementById(divID).className = 'visible'; }
			}