function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

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 getObj(id)
{
	var obj = null;
	if (document.all)
	{
		obj = eval('document.all.' + id);
	} else {
		obj = document.getElementById(id);
	}
	
	return obj;
}

function showsub(kkk)
{
	var obj = getObj(kkk);
	
	if (obj.style.display == 'none')
	{
		obj.style.display = 'block';
	}
	else 
	{
		obj.style.display = 'none';
	}
	
	return;
}

function calculate()
{
	var euro = parseInt(getObj('euro').value);
	var horpower = parseInt(getObj('horpower').value);
	
	// ((100.000ˆ x 8,00 NOK) + (40 hp x 135 NOK)) x 1,25 (tax)
	var sum = ((euro * exrate) + (horpower * hortax)) * tax;
	
	getObj('sum').innerHTML = myRound(sum) + " NOK";
	
	return;
}

function showpic(num)
{
	getObj('mainpic').src = pics[num];
	
	curpic = num;
}

function prev()
{
	var num = curpic - 1;
	if (num < 0)
	{
		num = pics.length - 1;
	}
	
	showpic(num);
}

function next()
{
	var num = curpic + 1;
	if (num > pics.length -1)
	{
		num = 0;
	}
	showpic(num);
}

function myRound(param)
{
	param = param*100;
	param = Math.round(param);
	param = param/100
	
	return param;
}

function yprice(inp, price)
{
	var obj = getObj('yprice');
	
	if (inp.checked)
	{
		obj.innerHTML = myRound(parseFloat(obj.innerHTML) + price); 
	}
	else
	{
		obj.innerHTML = myRound(parseFloat(obj.innerHTML) - price)
	}
}

function getElementsByAttributeValue(node, tag, att, val) 
{
	var indexes = node.getElementsByTagName(tag);
	var elements=[];
	
	for (i=0; i<indexes.length; i++) 
	{
		if (val)
		{
			if (indexes[i].getAttribute(att) == val) elements[elements.length]=indexes[i];
		}
		else
		{
			if (indexes[i].getAttribute(att) != null) elements[elements.length]=indexes[i];
		}
	}
	
	return (elements.length>0) ? elements : null ;
}

function gotoPrint(yid)
{
	var chboxes = getElementsByAttributeValue(getObj('yform'), 'input', 'type', 'checkbox');
	
	if (chboxes == null)
	{
		window.location = 'yachtprint.php?id=' + yid;
	}
	
	var urlstr	= '';
	
	for (i=0; i<chboxes.length; i++)
	{
		if (!chboxes[i].checked) continue;
		
		urlstr += '&eq[]=' + chboxes[i].value;
	}
	
	urlstr = 'yachtprint.php?id=' + yid + urlstr;
	
	window.location = urlstr;
}

function $() {
	var elements = new Array();

	for (var i = 0; i < arguments.length; i++) 
	{
		var element = arguments[i];
		if (typeof element == 'string')
			element = document.getElementById(element);

		if (arguments.length == 1) 
		return element;

		elements.push(element);
	}

	return elements;
}

function chFields()
{	
	var inps = $('rname', 'rcity', 'raddress', 'remail', 'rphonenumber');
	
	for(i=0; i<inps.length; i++)
	{
		if (inps[i].value.length < 1)
		{
			window.alert('Please fill all required fields!');
			return false;
		}
	}
	
	return true;
}