<!--

/*
	PureDOM explorer
	written by Christian Heilmann (http://icant.co.uk)
	Please refer to the pde homepage for updates: http://www.onlinetools.org/tools/puredom/
	Free for non-commercial use. Changes welcome, but no distribution without 
	the consent of the author.
*/
function pde_init()
{

/* CSS class names, change if needed */
	var mp='pde_nav';
	var hp='pde_hide';
	var sp='pde_show';
	var pp='pde_parent';
	var pa='pde_active';
	var cu='current';
	
	var d,uls,i;
	if(!document.getElementById && !document.createTextNode){return;}

/* navigation ID, change if needed */
	d=document.getElementById('nav');

	if (!d){return;}
	pde_addclass(d,mp)
	uls=d.getElementsByTagName('ul');
	for (i=0;i<uls.length;i++)
	{
		if(pde_checkcurrent(uls[i]))
		{
			pde_addclass(uls[i].parentNode.firstChild,pa);
		} else {
			pde_addclass(uls[i],hp);
			pde_addclass(uls[i].parentNode.firstChild,pp);
			uls[i].parentNode.firstChild.onclick=function()
			{
				pde_swapclass(this,pp,pa);
				pde_swapclass(this.parentNode.getElementsByTagName('ul')[0],hp,sp);
				return false;
			}
		}
	}
	function pde_checkcurrent(o){
		if(pde_check(o.parentNode,cu)){return true;}
		for(var i=0;i<o.getElementsByTagName('li').length;i++)
		{
			if(pde_check(o.getElementsByTagName('li')[i],cu)){return true;}
		}
		return false;
	}
	function pde_swapclass(o,c1,c2)
	{
		var cn=o.className
		o.className=!pde_check(o,c1)?cn.replace(c2,c1):cn.replace(c1,c2);
	}
	function pde_addclass(o,c)
	{
		if(!pde_check(o,c)){o.className+=o.className==''?c:' '+c;}
	}
	function pde_check(o,c)
	{
	 	return new RegExp('\\b'+c+'\\b').test(o.className);
	}
}

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];}
}
window.onload=function(){
	pde_init();
	MM_preloadImages('img/navio_01.gif','img/navio_02.gif','img/navio_03.gif','img/navio_04.gif','img/navio_05.gif','img/navio_06.gif','img/navio_07.gif','img/b1_middle.gif');
	// add other functions here.
}

//-->