function call_css (path_num){
	
		switch(path_num){
		case '':
			css_path = '/';
			break;
		case 0:
			css_path = './';
			break;
		default:
			css_path = '';
			for (i = 0; i < path_num; i++){
				css_path = css_path + '../';
			}
			break;
	}
	
	
	var ua = navigator.userAgent;

	if (ua.match(/MSIE (\d\.\d+)/)) {
		nv = ("ie");
	}
	else if (ua.match(/Gecko/)) {
		if (ua.match(/(Firefox)\/([\.\d]+)/)) {
			nv = ("ff");
		}
		else {
			nv = ("ff");
		}
	}
	else {
		nv = ("ie");
	}
	
	css_path = css_path + 'css' + '/' + nv + '/';
	css_load = css_path + 'top.css';
	css_load2 = css_path + 'default.css';
	css_load3 = css_path + 'size.css';
	document.write('<link rel="stylesheet" type="text/css" href="' + css_load + '">\n');
	document.write('<link rel="stylesheet" type="text/css" href="' + css_load2 + '">\n');
	document.write('<link rel="stylesheet" type="text/css" href="' + css_load3 + '">\n');
}