function cleartext()
 {
  var t = document.getElementById("thetext");
  t.value = '';
  updatetextlength();
  updatewords();
 }
 
 function selectall() {
  var t = document.getElementById("thetext");
  t.focus();
  t.select();
 }
 
 function updatetextlength()
 {
  var t = document.getElementById("thetext");
  var c = document.getElementById("characters");
  c.value = t.value.length+' chars';
 }
 
 function updatewords()
 {
  var t = document.getElementById("thetext");
  var char_count = t.value.length;
  var fullStr = t.value + " ";
  var initial_whitespace_rExp = /^[^A-Za-z0-9]+/gi;
  var left_trimmedStr = fullStr.replace(initial_whitespace_rExp, "");
  var non_alphanumerics_rExp = rExp = /[^A-Za-z0-9]+/gi;
  var cleanedStr = left_trimmedStr.replace(non_alphanumerics_rExp, " ");
  var splitString = cleanedStr.split(" ");
  var word_count = splitString.length -1;
  
  var w = document.getElementById("words");
  w.value = word_count+' words';
 }
 
 function updatecounts()
 {
  updatetextlength();
  updatewords();
 }
 
 function uppercase()
 {
  var t = document.getElementById("thetext");
  t.value = t.value.toUpperCase();
 }
 
 function lowercase()
 {
  var t = document.getElementById("thetext");
  t.value = t.value.toLowerCase();
 }
 
 function capitalizewords()
 {
  var t = document.getElementById("thetext");

  t.value =  (t.value + '').replace(/^(.)|\s(.)/g, function ($1) {
        return $1.toUpperCase();    });

 }
 
 function capitalizesentences()
 {
  var t = document.getElementById("thetext");
  var tarray = t.value.split(".");
  var tstr = '';
  
  for(i=0; i<tarray.length; i++)
  {
   tarray[i] = ltrim(tarray[i], ' ');
   tstr = tstr + tarray[i].substring(0,1).toUpperCase() + tarray[i].slice(1).toLowerCase();
   if(i < (tarray.length - 1))tstr = tstr + '. ';
  }
  t.value = tstr;
  
  
  tarray = t.value.split("?");
  tstr = '';  
  for(i=0; i<tarray.length; i++)
  {
   tarray[i] = ltrim(tarray[i], ' ');
   tstr = tstr + tarray[i].substring(0,1).toUpperCase() + tarray[i].slice(1);
   if(i < (tarray.length - 1))tstr = tstr + '? ';
  }  
  t.value = tstr;
  
  tarray = t.value.split("!");
  tstr = '';  
  for(i=0; i<tarray.length; i++)
  {
   tarray[i] = ltrim(tarray[i], ' ');
   tstr = tstr + tarray[i].substring(0,1).toUpperCase() + tarray[i].slice(1);
   if(i < (tarray.length - 1))tstr = tstr + '! ';
  }  
  t.value = tstr;
 }

 function replacetext()
 {
  var t = document.getElementById("thetext");
  var from = document.getElementById("from");
  var to = document.getElementById("to");
  
  var cs = document.getElementById("cs");
  var scope;
  
  var ff = from.value.replace("%N", "\n");
  var tt = to.value.replace("%N", "\n");
  
  if(cs.checked)scope = 'g';
  else scope = 'gi';
  
  var temp = t.value;
  temp = temp.replace(new RegExp(ff, scope), tt);
  t.value = temp;
  
  from.value = '';
  to.value = '';
  updatecounts();
 }
 
 function addtext()
 {
  var t = document.getElementById("thetext");
  var a = document.getElementById("add");
  var p = document.getElementById("addpos");
  var temp = t.value;
  var tstr = '';
  var tarray = t.value.split("\n");

  if(p.value == 'start')
  {
   for(i=0; i<tarray.length; i++)
   {
	insert = a.value.replace("%L", i+1);
	insert = insert.replace("%N", "\n");
    tstr = tstr+insert+tarray[i];
	if(i < (tarray.length - 1))tstr = tstr+"\n";
   }
   t.value = tstr;
  }
  else
  {
   for(i=0; i<tarray.length; i++)
   {
	insert = a.value.replace("%L", i+1);
	insert = insert.replace("%N", "\n");
    tstr = tstr+tarray[i]+insert;
	if(i < (tarray.length - 1))tstr = tstr+"\n";
   }
   t.value = tstr;
  }
  
  a.value = '';
  updatecounts();
 }
 
 function ltrim(str, chars)
 {
  chars = chars || "\\s";
  return str.replace(new RegExp("^[" + chars + "]+", "g"), "");
 }
 
 function rtrim(str, chars)
 {
  chars = chars || "\\s";
  return str.replace(new RegExp("[" + chars + "]+$", "g"), "");
 } 
 
 function trimtext()
 {
  var t = document.getElementById("thetext");
  var n = document.getElementById("trimnumber"); 
  var p = document.getElementById("trimpos");  
  var tarray = t.value.split("\n");
  var i;
  var tstr = '';
  
  if(p.value == 'first')
  {
   for(i=0; i<tarray.length; i++)tstr = tstr+tarray[i].substr(n.value)+"\n";
   tstr = rtrim(tstr);
  }
  else
  {
   for(i=0; i<tarray.length; i++)
   {
    tlen = tarray[i].length;
	tpos = tlen - n.value;
    tstr = tstr+tarray[i].substr(0, tpos)+"\n";
   }
   tstr = rtrim(tstr);
  }  
  
  t.value = tstr;
  updatecounts();
 }