function showPopin(){
	document.getElementById("layer").style.display = "block";
	document.getElementById("popin").style.display = "block";
	// if IE6
	var IE6 = false /*@cc_on || @_jscript_version < 5.7 @*/;
	if(IE6){
		var select = document.getElementsByTagName("select");
		for(var i=0; i<select.length; i++){
			select[i].style.visibility = "hidden";
		}
	}
}

function hidePopin(){
	document.getElementById("layer").style.display = "none";
	document.getElementById("popin").style.display = "none";
	// if IE6
	var IE6 = false /*@cc_on || @_jscript_version < 5.7 @*/;
	if(IE6){
		var select = document.getElementsByTagName("select");
		for(var i=0; i<select.length; i++){
			select[i].style.visibility = "visible";
		}
	}
}