//make field visible or invisiblel
// detect browser
NS4 = (document.layers) ? 1 : 0;
IE4 = (document.all) ? 1 : 0;
// W3C stands for the W3C standard, implemented in Mozilla (and Netscape 6) and IE5
W3C = (document.getElementById) ? 1 : 0;

function makeVisible ( name, hide ) 
{
	
	var ele;
	if ( W3C )
	{
		ele = document.getElementById(name);
	}
	else if ( NS4 )
	{
		ele = document.layers[name];
	}
	else
	{ // IE4
		ele = document.all[name];
	}

	if ( NS4 )
	{
		ele.visibility = 'show';
	}
	
	else
	{  // IE4 & W3C & Mozilla
		ele.style.visibility = 'visible';
		if ( hide )
		ele.style.display = '';
	}
}

function makeInvisible ( name, hide ) 
{
	
	if (W3C)
	{
		document.getElementById(name).style.visibility = "hidden";
		if ( hide )
		document.getElementById(name).style.display = "none";
	}
	else if (NS4)
	{
		document.layers[name].visibility = "hide";
	}
	else
	{
		document.all[name].style.visibility = "hidden";
		if ( hide )
		document.all[name].style.display = "none";
	}
}