function setHighContrastStyleSheet(disabled) {
  var i, a, main;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("href").indexOf("contrast.css") != -1) {
      a.disabled = (disabled == 1) ? true : false;
	  createCookie("disable_contrast", disabled, 365);
    }
  }
}

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 cookieFS = readCookie("set_fontsize");
  var fontsize = cookieFS ? cookieFS : 12;
  setFontSize(fontsize);
  var cookie = readCookie("disable_contrast");
  var disabled = cookie ? cookie : 1;
  setHighContrastStyleSheet(disabled);
  if (disabled != 1) {
	document.getElementById("searchbox-button").src = 'fileadmin/template/images/btn_search_act.gif';
	document.getElementById("searchbox-button").onmouseout = function() {
		this.src='fileadmin/template/images/btn_search_act.gif';
	}
	document.getElementById("searchbox-button").onmouseover = function() {
		this.src='fileadmin/template/images/btn_search_act_hc.gif';
	}
  }
}

var cookie = readCookie("disable_contrast");
var disabled = (cookie == null) ? 1 : cookie;
setHighContrastStyleSheet(disabled);