function setActiveStyleSheet(title) {
	
	
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
      a.disabled = true;
      if(a.getAttribute("title") == title) a.disabled = false;
    }
  }
 
  if(title == 'grey' || title == 'white'){
    var menuId = getMenuId();

    if(document.about){
      if (menuId!=0)
        document.home.src = '/images/'+title+'/menu_home0.gif';
      else
	document.home.src = '/images/'+title+'/menu_home1.gif';    
	    
      if (menuId!=1)
	document.about.src = '/images/'+title+'/menu_about0.gif';
      else
	document.about.src = '/images/'+title+'/menu_about1.gif';
	
      if (menuId!=2)
	document.services.src = '/images/'+title+'/menu_services0.gif';
      else
	document.services.src = '/images/'+title+'/menu_services1.gif';
	
      if (menuId!=3)
	document.projects.src = '/images/'+title+'/menu_projects0.gif';
      else
	document.projects.src = '/images/'+title+'/menu_projects1.gif';


    }
    
    if(document.menudiv){
      document.menudiv.src = '/images/'+title+'/menu_div.gif';
      document.menudiv1.src = '/images/'+title+'/menu_div.gif';
      document.menudiv2.src = '/images/'+title+'/menu_div.gif';
      document.menudiv3.src = '/images/'+title+'/menu_div.gif';	    
    
    }
    
  }  


  



}
function setMenuMouse(menu, action){

  var title, n;
  title = getActiveStyleSheet();
  
  
  if(action=='over')
	  n = 1;
  else if(action=='out')
	  n = 0;
  
  if(title != 'grey' && title != 'white')
	  title = 'grey';
	  
  if (menu=='home')
    document.home.src = '/images/'+title+'/menu_home'+n+'.gif';
  else if (menu=='about')
    document.about.src = '/images/'+title+'/menu_about'+n+'.gif';
  else if(menu=='services')
    document.services.src = '/images/'+title+'/menu_services'+n+'.gif';
  else if (menu=='projects')
    document.projects.src = '/images/'+title+'/menu_projects'+n+'.gif';  

}

function getActiveStyleSheet() {
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title") && !a.disabled) return a.getAttribute("title");
  }
  return null;
}

function getPreferredStyleSheet() {
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("rel").indexOf("alt") == -1 && a.getAttribute("title")) 
	    return a.getAttribute("title");
  }
  //alert("getPreferredStyleSheet");
  
  return null;
}

function createCookie(name,value,days) {
  if (days) {
    var date = new Date();
    date.setTime(date.getTime()+(days*24*60*60*1000));
    var expires = "; expires="+date.toGMTString();
  }
  else expires = "";
  document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
  var nameEQ = name + "=";
  var ca = document.cookie.split(';');
  for(var i=0;i < ca.length;i++) {
    var c = ca[i];
    while (c.charAt(0)==' ') c = c.substring(1,c.length);
    if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
  }
  return null;
}

window.onload = function(e) {
  var cookie = readCookie("style");
  var title = cookie ? cookie : getPreferredStyleSheet();

  setActiveStyleSheet(title);
}


window.onunload = function(e) {
  var title = getActiveStyleSheet();
  createCookie("style", title, 365);
}


var cookie = readCookie("style");
var title = cookie ? cookie : getPreferredStyleSheet();
setActiveStyleSheet(title);