function alphaOn(obj){
	obj.style.filter="alpha(opacity=70)";
}
function alphaOff(obj){
	obj.style.filter="alpha(opacity=100)";
}


if(readCookie("MYTEXTSIZE")){
	var textsize = readCookie("MYTEXTSIZE");
}else{
	var textsize=1;
}
if(textsize=="NaN"){textsize=1;}

function setActiveStyleSheet(num) {
  textsize=parseInt(textsize);
  textsize+=parseInt(num);
  if(textsize<1){
	  textsize=1;
  }
  if(textsize>4){
	  textsize=4;
  }
  textsize2="textsize"+textsize;
  if(! document.getElementsByTagName) return;
  var i, a, main;
  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") == textsize2) a.disabled = false;
    }
  }
	createCookie("MYTEXTSIZE", textsize, 365);
}


function createCookie(name,value,days) {
  var expires;
  if (days) {
    var date = new Date();
    date.setTime(date.getTime()+((60*60*24*1000)*days));
    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;
}