// Textzoom script
// 20050301 JH


var stdSize = 73;
function setFontSize(oper) {
	var size;
	if(oper=="plus") {
		size = parseInt(document.body.style.fontSize)+10;
		//alert(size);
	}else if(oper=="min"){
		size =  parseInt(document.body.style.fontSize)-10;
		//alert(size);
	}else{
		size=stdSize;
	}	
	document.body.style.fontSize = size + "%";	
}

window.onload = function(e) {   

  var cookie = readCookie("fontsize"); 
  var size
  if(cookie){
 	 size = cookie;
// 	 alert('size='+size)
 	 if (!size || size == 'NaN' ) size = stdSize;
 	 else stdSize = size;
  }
  setFontSize(0);
}

window.onunload = function(e) {
  var textsize = parseInt(document.body.style.fontSize);
  //alert("onunload = " + textsize);
  createCookie("fontsize", textsize, 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;
}