/*
Global "swap" holder
Use value, null, if no layer initially visible
*/
var currlayerId = "text1";
if(document.images){
  var hpnav1 = new Image(); hpnav1.src = "/images/v1_1/homepage/whatwedoOn.gif";
  var hpnav2 = new Image(); hpnav2.src = "/images/v1_1/homepage/whatyougetOn.gif";
  var hpnav3 = new Image(); hpnav3.src = "/images/v1_1/homepage/whatitcostsOn.gif";
  var hpnav4 = new Image(); hpnav4.src = "/images/v1_1/homepage/compareOn.gif";
  var hpnav5 = new Image(); hpnav5.src = "/images/v1_1/homepage/accountantsOn.gif";
}

function toglayer(id,nav)
	{
	if(currlayerId) setDisplay(currlayerId, "none");
	if(id)setDisplay(id, "block");
	currlayerId = id;
	
	if(nav)hpchange(nav);
	}

function setDisplay(id,value)
	{
	var elm = document.getElementById(id);
	elm.style.display = value;
	}

function hpchange(imageName){
  if(document.images){ document[imageName].src = eval(imageName + ".src"); }
	if (imageName == 'hpnav1'){
  		document["hpnav2"].src = "/images/v1_1/homepage/whatyougetOff.gif";
		document["hpnav3"].src = "/images/v1_1/homepage/whatitcostsOff.gif";
		document["hpnav4"].src = "/images/v1_1/homepage/compareOff.gif";
		document["hpnav5"].src = "/images/v1_1/homepage/accountantsOff.gif";
	}
	else if(imageName == 'hpnav2'){
  		document["hpnav1"].src = "/images/v1_1/homepage/whatwedoOff.gif";
		document["hpnav3"].src = "/images/v1_1/homepage/whatitcostsOff.gif";
		document["hpnav4"].src = "/images/v1_1/homepage/compareOff.gif";
		document["hpnav5"].src = "/images/v1_1/homepage/accountantsOff.gif";
	}
	else if(imageName == 'hpnav3'){
		document["hpnav1"].src = "/images/v1_1/homepage/whatwedoOff.gif";
		document["hpnav2"].src = "/images/v1_1/homepage/whatyougetOff.gif";
		document["hpnav4"].src = "/images/v1_1/homepage/compareOff.gif";
		document["hpnav5"].src = "/images/v1_1/homepage/accountantsOff.gif";
	}
	else if(imageName == 'hpnav4'){
		document["hpnav1"].src = "/images/v1_1/homepage/whatwedoOff.gif";
		document["hpnav2"].src = "/images/v1_1/homepage/whatyougetOff.gif";
		document["hpnav3"].src = "/images/v1_1/homepage/whatitcostsOff.gif";
		document["hpnav5"].src = "/images/v1_1/homepage/accountantsOff.gif";
	}
	else {
		document["hpnav1"].src = "/images/v1_1/homepage/whatwedoOff.gif";
		document["hpnav2"].src = "/images/v1_1/homepage/whatyougetOff.gif";
		document["hpnav3"].src = "/images/v1_1/homepage/whatitcostsOff.gif";
		document["hpnav4"].src = "/images/v1_1/homepage/compareOff.gif";
	}
}