function change_css(css_id,css_document,cookie_name){ 

document.getElementById(css_id).setAttribute("href",css_document);

set_cookie(cookie_name,css_document,365);
} 
function set_cookie(c_name,c_value,c_expires,c_path,c_domain,c_secure){

var cookie_string=c_name + "=" + escape(c_value);

if(c_expires){ 
var expires = new Date();

expires.setTime(expires.getTime() + c_expires*24*60*60*1000); 
cookie_string+=";expires="+expires; 
} 
if(c_path){ 
cookie_string+=";path="+c_path; 
} 
if(c_domain){ 
cookie_string+=";domain="+c_domain; 
} 
if(c_secure){ 
cookie_string+=";secure"; 
}

document.cookie=cookie_string; 

} 

function get_cookie(cookie_name){ 

var cookie_pos = document.cookie.indexOf(cookie_name); 


if (cookie_pos != -1){

 
cookie_pos += cookie_name.length + 1; 

var cookie_end = document.cookie.indexOf(";", cookie_pos); 
if (cookie_end == -1){ 
cookie_end = document.cookie.length;

} 
var value = unescape(document.cookie.substring(cookie_pos,cookie_end)); 
} 

return value; 
}

function CtoSkin() { 

var d_css_document="/css/theme/colorstyle_orange.css"; 
var cookie = get_cookie("myskin");
var css_document=cookie?cookie:d_css_document;

change_css("skin",css_document,"myskin"); 
} 
CtoSkin();