var myplace = document.location.href;
var re = /index.htm/i;
var ns4 = (document.layers)? true:false;

if (re.test(myplace))
	{
	document.write ('<link rel="stylesheet" type="text/css" href="_style_blue.css">');
	}
else
	{
	if (!ns4)
	{
	document.write ('<link rel="stylesheet" type="text/css" href="../_style_grey.css">');
	}
	else
	{
	document.write ('<link rel="stylesheet" type="text/css" href="../_style_grey_ns4.css">');
	}
}