//AgentCheck実行
brCheck();

//AgentCheck
function brCheck(){
	if(navigator.appName == "Netscape" && navigator.appVersion.charAt(0) >=4){
	//NN6
		if(document.getElementById){
			Agent="NN6";
		}
	//NN4.7シリーズ
		if(document.layers){
			Agent="NN";
		}
	}
	else if(navigator.appName == "Microsoft Internet Explorer" && navigator.appVersion.charAt(0) >= 4){
	//IE5以上
		if((document.getElementById)&&(document.all)){
			Agent="IE5";
		}
	//IE4まで
		if(!(document.getElementById)&&(document.all)){
			Agent="IE";
		}
	}
	else{
		Agent="OTHER";
	}
}

//SHOW LAYER
function showLayer(idName){
	if(Agent == "NN"){
	document.layers[idName].visibility = 'visible';
	}
	else if(Agent == "IE"){
		document.all(idName).style.visibility = 'visible';
	}
	else if((Agent == "NN6")||(Agent == "IE5")){
		document.getElementById(idName).style.visibility = 'visible';
	}
}

//HIDDEN LAYER
function hideLayer(idName){
	if(Agent == "NN"){
	document.layers[idName].visibility = 'hidden';
	}
	else if(Agent == "IE"){
		document.all(idName).style.visibility = 'hidden';
	}
	else if((Agent == "NN6")||(Agent == "IE5")){
		document.getElementById(idName).style.visibility = 'hidden';
	}
}
//RESET LAYER
function clearLayer(){
	hideLayer("lay11");
	hideLayer("lay12");
	hideLayer("lay13");
	hideLayer("lay14");
	
	hideLayer("lay1");
}