function showLayer(a)
{
  var elem, vis;
  // this is the way the standards work
  if(document.getElementById)
    elem = document.getElementById(a);
  // this is the way old msie versions work
  else if(document.all)
      elem = document.all[a];
  // this is the way nn4 works
  else if(document.layers)
    elem = document.layers[a];
  vis = elem.style;
  // if the style.display value is blank we try to figure it out here
  if(vis.display==''&&elem.offsetWidth!=undefined&&elem.offsetHeight!=undefined)
    vis.display = (elem.offsetWidth!=0&&elem.offsetHeight!=0)?'block':'none';
  vis.display = (vis.display==''||vis.display=='block')?'none':'block';
  vis.visible = (vis.visible==''||vis.visible=='hidden')?'hidden':'visible';
  
  if (a=='our-process' && vis.display=='block')
  	 location.href="#our-process-anchor";
  if (a=='golem' && vis.display=='block')
  	 location.href="#golem-anchor";
}

function showWho()
{
	document.getElementById('who_are_you').style.display='block';
	document.getElementById('which_sector_are_you_in').style.display='none';
	hideProductService();
	location.href="index.php?role=role#step1-anchor"; 
}

function showWhich()
{
	document.getElementById('who_are_you').style.display='none';
	document.getElementById('which_sector_are_you_in').style.display='block';	
	hideProductService();
	location.href="index.php?sector=sector#step1-anchor"; 
}

function hideRoles()
{
	// hide roles
	document.getElementById('role-financial-director').style.display='none';
	//document.getElementById('role-graphic-designer').style.display='none';
	document.getElementById('role-it-director').style.display='none';
	document.getElementById('role-managing-director').style.display='none';
	document.getElementById('role-marketing-director').style.display='none';
	document.getElementById('role-operations-director').style.display='none';
	//document.getElementById('role-project-manager').style.display='none';
	document.getElementById('role-sales-director').style.display='none';
	//document.getElementById('role-web-designer').style.display='none';	
}

function showRole(a)
{
	// hide roles
	hideSectors();
	hideRoles();
   
   // show selected layer
	document.getElementById(a).style.display="block";
	document.getElementById('step2').style.display="block";
	location.href="#step2-anchor"; 
}

function hideSectors()
{
	// hide sectors
	//document.getElementById('sector-creative').style.display='none';
	document.getElementById('sector-construction').style.display='none';
	document.getElementById('sector-events').style.display='none';
	document.getElementById('sector-finance').style.display='none';
	//document.getElementById('sector-business-consultants').style.display='none';
	//document.getElementById('sector-government').style.display='none';
	document.getElementById('sector-manufacturing').style.display='none';
	document.getElementById('sector-marketing').style.display='none';
	document.getElementById('sector-retail').style.display='none';	
}

function showSector(a)
{
	// hide roles
	hideSectors();

	// show selected layer
	document.getElementById(a).style.display="block";
	document.getElementById('step2').style.display="block";
	location.href="#step2-anchor"; 
}

function hideProductService()
{
	document.getElementById('step2').style.display="none";
	location.href="#step1-anchor"; 
}