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(/Opera[\/\s](\d\.\d+)/)) {
			nv = ("etc");
		}
		else if (ua.match(/MSIE (5\.\d+)/)) {
			nv = ("ie");
		}
		else if (ua.match(/MSIE (6\.\d+)/)) {
			nv = ("ie");
		}
		else if (ua.match(/MSIE (7\.\d+)/)) {
			nv = ("ie_7");
		}
	else if (ua.match(/Mozilla\/(4\.[5678]\d?)/)) {
		nv = ("nc");
	}
	else if (ua.match(/Netscape6?\/([\.\d]+)/)) {
		nv = ("nn");
	}
	else if (ua.match(/Safari\/([\.\d]+)/)) {
		nv = ("sf");
	}
	else if (ua.match(/Gecko/)) {
		if (ua.match(/(Firefox)\/([\.\d]+)/)) {
			nv = ("ff");
		}
		else {
			nv = ("etc");
		}
	}
	else {
		nv = ("etc");
	}
	
	css_path = css_path + 'css' + '/' + nv + '/';
	css_load1 = css_path + 'import.css';
	
	document.write('<link rel="stylesheet" type="text/css" href="' + css_load1 + '">\n');

}