/* JAVASCRIPTS for Loucoll website pages */


//function to change text size
function tx(size) {
	//if loading from page normally load selected CSS
	if (size == "check") {
		
		var currenText = getCookie("size");
		
		if (currenText == null) {
			currenText = "";
		}		
		document.styleSheets[0].href.value = "http://www.loucoll.ac.uk/web"+ currenText  +".css";		
		
	}
	//else if loaded from text buttons, delete cookie, then reset it from the selected size
	else {
		document.all.stylesheet.href = "http://www.loucoll.ac.uk/web"+ size +".css";
		document.cookie = 'size=size; expires=Fri, 27 Jul 2001 02:47:11 UTC;path=/';
		document.cookie = "size="+ size +";path=/;"
		//alert(document.all.stylesheet.href);
	}
	
}

function setCookie(name, value, expires, path, domain, secure) {
  var curCookie = name + "=" + escape(value) +
      ((expires) ? "; expires=" + expires.toGMTString() : "") +
      ((path) ? "; path=" + path : "") +
      ((domain) ? "; domain=" + domain : "") +
      ((secure) ? "; secure" : "");
  document.cookie = curCookie;
}

function getCookie(name) {
  var dc = document.cookie;
  var prefix = name + "=";
  var begin = dc.indexOf("; " + prefix);
  if (begin == -1) {
    begin = dc.indexOf(prefix);
    if (begin != 0) return null;
  } else
    begin += 2;
  var end = document.cookie.indexOf(";", begin);
  if (end == -1)
    end = dc.length;
  return unescape(dc.substring(begin + prefix.length, end));
}

// this deletes the cookie when called
function delCookie( name, path, domain ) {
if ( Get_Cookie( name ) ) document.cookie = name + "=" +
( ( path ) ? ";path=" + path : "") +
( ( domain ) ? ";domain=" + domain : "" ) +
";expires=Thu, 01-Jan-1970 00:00:01 GMT";
}