var isIE4 = false; 
var isNav4 = false;
var isCom = false; 

if (document.all && !document.getElementById) { 
  isIE4 = true;        
} else if (document.layers) {
  isNav4 = true;
} else if (document.getElementById) {
  isCom = true;   
} 

function getState(action) 
{ 
	if ( isNav4 ) 
	{ 
		if ( action == 'hide' ) { return 'hide'; }
		if ( action == 'show' ) { return 'show'; }
	}
	else if ( isIE4 || isCom ) 
	{
		if ( action == 'hide' ) { return 'hidden'; }
		if ( action == 'show' ) { return 'visible'; }
	}
}
	
function getReference(divName) 
{ 
	if (isNav4) 
	{
		return document.layers[divName];
	}
	else if (isIE4) 
	{
		return document.all(divName);
	}
	else if (isCom) 
	{
		return document.getElementById(divName);
	}
}

function getStyleReference(divName) 
{ 
	if (isNav4) 
	{
		return document.layers[divName];
	}
	else if (isIE4) 
	{
		return document.all(divName).style;
	}
	else if (isCom) 
	{
		return document.getElementById(divName).style;
	}
}