function mapnav(title,desc)
	{
	var div_title = document.getElementById('map_title');	
	var div_desc = document.getElementById('map_desc');	
	div_title.innerHTML = title;
	div_desc.innerHTML = desc;
	}
function mapnav2()
	{
	var div_title = document.getElementById('map_title');	
	var div_desc = document.getElementById('map_desc');	
	div_title.innerHTML = '';
	div_desc.innerHTML = '';
	}
function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function calculate_total() {
	var node_list = document.getElementsByTagName('input');
	var currentTotal = 	document.getElementById('initial_price').value;
	for (var i = 0; i < node_list.length; i++) {
		var node = node_list[i];
		if (node.getAttribute('type')=='radio') 
			{ 
			if (node.checked == true) { currentTotal = eval(currentTotal) + eval(node.value); }
			}
	}
	document.getElementById('total_price').value = currentTotal;
}