// イメージの作成
var isIE4 = false;
var isNN4 = false;
var isNN6 = false;

//var myXsize = 995;
var myXsize = 800;

//広告表示判定
function adplay(layName) {

	isIE4 = document.all;
	isNN4 = document.layers;
	isNN6 = document.getElementById;

	winXsize = document.body.clientWidth;


	if ( winXsize >= myXsize ) {

		if (isIE4) { document.all( layName ).style.visibility ='visible'; }
		else if (isNN4) { document.layers[ layName ].visibility ='show'; }
		else if (isNN6) { document.getElementById( layName ).style.visibility ='visible'; } 


	}

}