//toggleVisibility Script
//written by Brian Fleming
//March-05-2006


//Toggles back and forth between Layer being visible or not
function toggleLayer( Layer ){  

	var elem, vis;  
	if( document.getElementById ) // this is the way the standards work    
	elem = document.getElementById( Layer );  else if( document.all ) // OldIE Qualifier      
	elem = document.all[Layer];  else if( document.layers ) // Netscape Qualifier   
	elem = document.layers[Layer];  vis = elem.style;  // check style.display status 
	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';
	
	}

//Makes layer invisible
function hideLayer( Layer ){  

	var elem, vis;  
	if( document.getElementById ) // this is the way the standards work    
	elem = document.getElementById( Layer );  else if( document.all ) // OldIE Qualifier      
	elem = document.all[Layer];  else if( document.layers ) // Netscape Qualifier   
	elem = document.layers[Layer];  vis = elem.style;  // check style.display status 
	if(vis.display==''&&elem.offsetWidth!=undefined&&elem.offsetHeight!=undefined)    
	vis.display = (elem.offsetWidth!=0&&elem.offsetHeight!=0)?'none':'none';  
	vis.display = (vis.display==''||vis.display=='block')?'none':'none';
	
	}

//Makes layer visible
function showLayer( Layer ){  

	var elem, vis;  
	if( document.getElementById ) // this is the way the standards work    
	elem = document.getElementById( Layer );  else if( document.all ) // OldIE Qualifier      
	elem = document.all[Layer];  else if( document.layers ) // Netscape Qualifier   
	elem = document.layers[Layer];  vis = elem.style;  // check style.display status 
	if(vis.display==''&&elem.offsetWidth!=undefined&&elem.offsetHeight!=undefined)    
	vis.display = (elem.offsetWidth!=0&&elem.offsetHeight!=0)?'block':'block';  
	vis.display = (vis.display==''||vis.display=='block')?'block':'block';
	
	}