function changeConsumption(newValue)
{
	document.getElementById("1500_kwH").src = '/tpl/default/gfx/rechner/1500_kwH.gif';
	document.getElementById("2800_kwH").src = '/tpl/default/gfx/rechner/2800_kwH.gif';
	document.getElementById("4000_kwH").src = '/tpl/default/gfx/rechner/4000_kwH.gif';
	document.getElementById("6000_kwH").src = '/tpl/default/gfx/rechner/6000_kwH.gif';
	
	document.getElementById("TotalUsage").value = newValue;
	document.getElementById(newValue + "_kwH").src = '/tpl/default/gfx/rechner/' + newValue + '_kwH_hl.gif';
}