var scrwidth; //横幅指定
var str;//書き出し変数

	str = 0;
	scrwidth = 0;
	scrwidth = screen.width;

	if (scrwidth < 1000) {
str = "<link rel='stylesheet' href='css/w800.css' type='text/css' media='all'>";}
else
	if (scrwidth >1000) {
str = "<link rel='stylesheet' href='css/w1024.css' type='text/css' media='all'>";}

document.write(str); //書き出し処理