var HhnkBw = new Image(); HhnkBw.src = "/Internet/Images/hhnk_bw.png";
var HhnkClr = new Image(); HhnkClr.src = "/Internet/Images/hhnk_color.png";

var WaternetBw = new Image(); WaternetBw.src = "/Internet/Images/waternet_bw.png";
var WaternetClr = new Image(); WaternetClr.src = "/Internet/Images/waternet_color.png";

var RvABw = new Image(); RvABw.src = "/Internet/Images/rva_bw.png";
var RvAClr = new Image(); RvAClr.src = "/Internet/Images/rva_color.png";

function swapHhnk(elementId)
{
	if(document.getElementById(elementId).src == HhnkBw.src)
	{
		document.getElementById(elementId).src = HhnkClr.src;
	}
	else
	{
		document.getElementById(elementId).src = HhnkBw.src;
	}
}

function swapWaternet(elementId)
{
	if(document.getElementById(elementId).src == WaternetBw.src)
	{
		document.getElementById(elementId).src = WaternetClr.src;
	}
	else
	{
		document.getElementById(elementId).src = WaternetBw.src;
	}
}

function swapRvA(elementId)
{
	if(document.getElementById(elementId).src == RvABw.src)
	{
		document.getElementById(elementId).src = RvAClr.src;
	}
	else
	{
		document.getElementById(elementId).src = RvABw.src;
	}
}

document.getElementById('content').style.backgroundImage = "url('/Internet/Images/bg_" + Math.floor(Math.random()*8) + ".jpg')";