document.ondblclick = goPage;

function findSelection(){
	if (document.getSelection){ txt = document.getSelection();}
	else if (document.selection){ txt = document.selection.createRange().text;}
	else {return "";}
	return txt;
}

function goPage(){
	var result = findSelection();
	if (result != "") {        
        window.location = "http://huslab.fi/cgi-bin/ohjekirja/tt_cgi.exe?hakulauseke=" + encodeUTF(result) + "&submit=hae"
	}
}

var hexchars = "0123456789ABCDEF";

function toHex(n) {
  return hexchars.charAt(n>>4)+hexchars.charAt(n & 0xF);
}

var okURIchars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_-";

function encodeUTF(s) {
  var c;
  var enc = "";
  for (var i= 0; i<s.length; i++) {
    if (okURIchars.indexOf(s.charAt(i))==-1)
      enc += "%"+toHex(s.charCodeAt(i));
    else
      enc += s.charAt(i);
  }
  return enc;
}