function openClose(btn,divID){

	if(window[divID+'_vis']=='undefined')
	{
	   window[divID+'_vis']=true;
	}
	
	if(window[divID+'_vis']==false){

		document.getElementById(divID).style.display='block';

		window[divID+'_vis']=true;

		document.getElementById(btn).src='images/reference/circle_arrow_home.gif';

	}else{

		document.getElementById(divID).style.display='none';

		window[divID+'_vis']=false;

		document.getElementById(btn).src='images/reference/circle_arrow_home.gif';

	}

}

function SetCurrentNavigation(imageid)
{
    var navImage;
    var imageSrc;
    var navAnchor;
    
    if (!document.getElementById(imageid))
    {
        alert('The navigation element ' + imageid + ' does not exist.');
    } 
    else if (!document.getElementById(imageid + '_anchor'))
    {
        alert('The navigation element ' + imageid + '_anchor does not exist.');
    }
    else 
    {
        navImage = document.getElementById(imageid);
        
        imageSrc = navImage.src;
        imageSrc = imageSrc.replace(imageid, imageid + '3');
        
        navImage.src = imageSrc;
        navImage.onmouseover = '';
        navImage.onmouseout = '';
        navImage.removeAttribute('onmouseover');
        navImage.removeAttribute('onmouseout');
        
        navAnchor = document.getElementById(imageid + '_anchor');
        navAnchor.removeAttribute('href');
        navAnchor.disabled = true;        
    }
}

    

function PreLoadImages()
{
   MM_preloadImages('images/nav/nav_about2.gif','images/nav/nav_news2.gif','images/nav/nav_service2.gif','images/nav/nav_clients2.gif','images/nav/nav_portfolio2.gif','images/nav/nav_staff2.gif','images/nav/nav_contact2.gif');
}

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];}

}