// This code was written by Tyler Akins and has been placed in the
// public domain.  It would be nice if you left this header intact.
// Base64 code from Tyler Akins -- http://rumkin.com

var keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";

function encode64(input) {
	var output = new String();
	var chr1, chr2, chr3;
	var enc1, enc2, enc3, enc4;
	var i = 0;

	while (i < input.length) {
		chr1 = input.charCodeAt(i++);
		chr2 = input.charCodeAt(i++);
		chr3 = input.charCodeAt(i++);

		enc1 = chr1 >> 2;
		enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
		enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
		enc4 = chr3 & 63;

		if (isNaN(chr2)) {
			enc3 = enc4 = 64;
		} else if (isNaN(chr3)) {
			enc4 = 64;
		}

		output += (keyStr.charAt(enc1) + keyStr.charAt(enc2) + keyStr.charAt(enc3) + keyStr.charAt(enc4));
   }
   
   return output.toString();
}

function decode64(input) {
	var output = new StringMaker();
	var chr1, chr2, chr3;
	var enc1, enc2, enc3, enc4;
	var i = 0;

	// remove all characters that are not A-Z, a-z, 0-9, +, /, or =
	input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");

	while (i < input.length) {
		enc1 = keyStr.indexOf(input.charAt(i++));
		enc2 = keyStr.indexOf(input.charAt(i++));
		enc3 = keyStr.indexOf(input.charAt(i++));
		enc4 = keyStr.indexOf(input.charAt(i++));

		chr1 = (enc1 << 2) | (enc2 >> 4);
		chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
		chr3 = ((enc3 & 3) << 6) | enc4;

		output.append(String.fromCharCode(chr1));

		if (enc3 != 64) {
			output.append(String.fromCharCode(chr2));
		}
		if (enc4 != 64) {
			output.append(String.fromCharCode(chr3));
		}
	}

	return output.toString();
}

function is_string (mixed_var){
    // Returns true if variable is a Unicode or binary string  
	return (typeof( mixed_var ) == 'string');
}

function strip_tags (input, allowed) {
    // Strips HTML and PHP tags from a string  
	 if (!is_string(input)) {alert('not string'); return '';};
	 
   allowed = (((allowed || "") + "")
	  .toLowerCase()
	  .match(/<[a-z][a-z0-9]*>/g) || [])
	  .join(''); // making sure the allowed arg is a string containing only tags in lowercase (<a><b><c>)           
	  var tags = /<\/?([a-z][a-z0-9]*)\b[^>]*>/gi,
	   commentsAndPhpTags = /<!--[\s\S]*?-->|<\?(?:php)?[\s\S]*?\?>/gi;
   return input.replace(commentsAndPhpTags, '').replace(tags, function($0, $1){
	  return allowed.indexOf('<' + $1.toLowerCase() + '>') > -1 ? $0 : '';
   });        
 }

function addslashes (str) {
    // Escapes single quote, double quotes and backslash characters in a string with backslashes  
    return (str+'').replace(/[\\"']/g, '\\$&').replace(/\u0000/g, '\\0');
}

function setCookie(c_name,value,expiredays)
{
	var exdate=new Date();
	exdate.setTime(exdate.getTime()+expiredays);
	document.cookie=c_name+ "=" +escape(value)+ ";path=/;" +
	((expiredays==null) ? "" : ";expires="+exdate.toUTCString());
}

function getCookie(c_name)
{
	if (document.cookie.length>0)
	  {
	  c_start=document.cookie.indexOf(c_name + "=");
	  if (c_start!=-1)
		{
		c_start=c_start + c_name.length+1;
		c_end=document.cookie.indexOf(";",c_start);
		if (c_end==-1) c_end=document.cookie.length;
		return unescape(document.cookie.substring(c_start,c_end));
		}
	  }
	return "";
}

function inArray(arr, elem){
	for (var i=0; i<arr.length; i++){
		if (arr[i]==elem) return i;
	}
	return -1;
}

function campos_requeridos_llenos(f, arr_requeridos){
	for (var i=0; i<arr_requeridos.length; i++){
		if (f.elements[arr_requeridos[i]].value=='') return false;
	}
	return true;
}

function delete_items_select(cname){
   while (cname.options.length>0)
    {
	 deleteIndex=cname.options.length-1;
	 cname.options[deleteIndex]=null;
	}
}

function add_select_item(cname, thevalue, thetext, theindex){
	var myOption=new Option();
	myOption.text=thetext;
	myOption.value=thevalue;
	ind = (theindex==-1 ? cname.length : theindex);
	cname.options[ind]=myOption;
}

function exists_in_select( cname, theitem ){
	exists = false;
	var c = cname;
	var i;
	for(i=0; i<c.length; i++){
		if (c[i].value == theitem) return true;
	}
	return false;
}

function valid_email_address(src){
	var x = src;
	var filter  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
	return filter.test(x);
}

function valid_time(src){
	var x = src;
	p = x.indexOf(':',0);
	if (p==-1) return false;
	h = x.substring(0,p);
	if ( !(h>=0 && h<=23) ) return false;
	m = x.substring(p+1, x.length);
	if ( !(m>=0 && m<=59) ) return false;
	return true;
}

/**
 * Checks/unchecks all rows
 *
 * @param   string   the form name
 * @param   boolean  whether to check or to uncheck the element
 * @param   string   basename of the element
 * @param   integer  min element count
 * @param   integer  max element count
 *
 * @return  boolean  always true
 */
// modified 2004-05-08 by Michael Keck <mail_at_michaelkeck_dot_de>
// - set the other checkboxes (if available) too
function setCheckboxesRange(the_form, do_check, basename)
{
    vControl = document.getElementsByName( basename );
	for (var i = 0; i < vControl.length; i++) {
        if (typeof(vControl[i]) != 'undefined') {
	        vControl[i].checked = do_check;
        }
    }

    return true;
} // end of the 'setCheckboxesRange()' function


function setCheckbox(the_form, basename, the_value)
{
    vControl = document.getElementsByName( basename );
	for (var i = 0; i < vControl.length; i++) {
        if (typeof(vControl[i]) != 'undefined') {
	        vControl[i].checked = the_value;
        }
    }

    return true;
} // end of the 'setCheckboxesRange()' function

// added 2004-05-08 by Michael Keck <mail_at_michaelkeck_dot_de>
//   copy the checked from left to right or from right to left
//   so it's easier for users to see, if $cfg['ModifyAtRight']=true, what they've checked ;)
function copyCheckboxesRange(the_form, the_name, the_clicked)
{
    if (typeof(document.forms[the_form].elements[the_name]) != 'undefined' && typeof(document.forms[the_form].elements[the_name + 'r']) != 'undefined') {
        if (the_clicked !== 'r') {
            if (document.forms[the_form].elements[the_name].checked == true) {
                document.forms[the_form].elements[the_name + 'r'].checked = true;
            }else {
                document.forms[the_form].elements[the_name + 'r'].checked = false;
            }
        } else if (the_clicked == 'r') {
            if (document.forms[the_form].elements[the_name + 'r'].checked == true) {
                document.forms[the_form].elements[the_name].checked = true;
            }else {
                document.forms[the_form].elements[the_name].checked = false;
            }
       }
    }
}

function open_sized_window(src, width, height) {
	win = window.open( src, 'cWin','height=' + height + ', width=' + width + ', top=50, left=50, toolbar=no, menubar=no, scrollbars=yes, resizable=yes, location=no, directories=no, status=no');
	win.focus();
}

function open_window(src) {
	win = window.open( src, 'cWin','top=50, left=50, toolbar=no, menubar=no, scrollbars=yes, resizable=no, location=no, directories=no, status=no');
	win.focus();
}


function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}
function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}
function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}