var strB = navigator.userAgent;
var boolIE = strB.indexOf("MSIE") != -1 && strB.indexOf("Opera") == -1;
var boolOp = strB.indexOf("Opera") != -1;
if(boolOp) {
	document.writeln("<link rel='stylesheet' type='text/css' media='screen' href='conf/gh.css' />");
}else if(boolIE) {
	document.writeln("<link rel='stylesheet' type='text/css' media='screen' href='conf/gh_ie.css' />");
}else{
	document.writeln("<link rel='stylesheet' type='text/css' media='screen' href='conf/gh.css' />");
}