// JavaScript Document
       function reveal(id) {
			setCopyYear(); // updates end year in copyright
			if (!Element.visible('frame')) {
		      Effect.SlideDown('frame',{duration:0.9, queue:'front'});			  
		  } 
		  if (Element.visible('design') && id != 'design') {
		      Effect.Fade('design',{duration:0.2, queue:'front'});
			  Element.hide('designContainer');	
		  }	  
		  if (Element.visible('development') && id != 'development') {
		      Effect.Fade('development',{duration:0.2, queue:'front'});
			  Element.hide('developmentContainer');		
		  }		
		  if (Element.visible('strategy') && id != 'strategy') {
		      Effect.Fade('strategy',{duration:0.2, queue:'front'});
			  Element.hide('strategyContainer');			
		  }	
		  Effect.Appear(id,{duration:0.8, queue:'end'});
		  Element.show(id + 'Container');	
		  
		// make sure other layers are hidden 
		if (id != 'design') {	
		    Element.hide('design');
		    Element.hide('designContainer');	
		} 
		if (id != 'development') {
		    Element.hide('development');	
		    Element.hide('developmentContainer');	
		}  
		if (id != 'strategy') {
		    Element.hide('strategy');	
		    Element.hide('strategyContainer');	
		}  		  
		  
		  	 		  	  
	   }