function checkLength(elementId, maxLength) {
	var field = $(elementId);
 	var value = field.value;
 	
	 if(value.length>maxLength) {
 		field.value=value.substring(0,maxLength);
 	}
}

function replacechar(match){
	if (match=="<" || match=="(" || match==")" || match=="{" || match=="}" || match==">" || match=="'")
	return "";
	else return match;	
}

function html2entities(input_text){

input_text=input_text.replace(/&lt;/g, "");
input_text=input_text.replace(/&LT;/g, "");
input_text=input_text.replace(/&gt;/g, "");
input_text=input_text.replace(/&GT;/g, "");
input_text=input_text.replace(/\[/g, "");
input_text=input_text.replace(/\]/g, "");
var res_text = "";
var re=/[(){}<>']/g;
var str = "";
var str_char = "";

for (i=0; i<input_text.length; i++){
  str_char = input_text.substring(i,i+1);
  str = str_char.replace(re, function(m){return replacechar(m)});
  res_text = res_text+str;  
}
document.bbSearchBox.ssUserText.value = res_text;
}

function add_book(lang_val){
	if ((typeof window.sidebar == 'object') && (typeof window.sidebar.addPanel == 'function')) {	
	window.sidebar.addPanel (document.title, document.location.href,'');
	} 
	else if( window.external ) {
		window.external.AddFavorite(document.location.href, document.title)
	}
	else{
		if(lang_val==1)
		alert('Unfortunately, this browser does not support the requested action, try pressing CTRL+D to bookmark this page manually.');
		else alert('За съжаление, желаното от вас действие не може да бъде изпълнено в този браузър. За да добавите страницата в Любими, опитайте с натискане на CTRL+D.');
	} 
}

function IsValidPhone(sText)
{
	var ValidChars = "0123456789()-+";
	var IsNumber=true;
	var Char;


	for (i = 0; i < sText.length && IsNumber == true; i++) 
		{ 
		Char = sText.charAt(i); 
		if (ValidChars.indexOf(Char) == -1) 
			{
				return IsNumber = false;
			}
		}
	return IsNumber;

}
function IsValidNum(sText)
{
   var ValidChars = "0123456789.,";
   var IsNumber=true;
   var Char;

 
   for (i = 0; i < sText.length && IsNumber == true; i++) 
	  { 
	  Char = sText.charAt(i); 
	  if (ValidChars.indexOf(Char) == -1) 
		 {
			return IsNumber = false;
		 }
	  }
   return IsNumber;
   
}

/**
 * DHTML date validation script. Courtesy of SmartWebby.com (http://www.smartwebby.com/dhtml/)
 */
// Declaring valid date character, minimum year and maximum year
var dtCh= "/";
var minYear=1900;
var maxYear=2100;

function isInteger(s){
	var i;
    for (i = 0; i < s.length; i++){   
        // Check that current character is number.
        var c = s.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    }
    // All characters are numbers.
    return true;
}

function stripCharsInBag(s, bag){
	var i;
    var returnString = "";
    // Search through string's characters one by one.
    // If character is not in bag, append to returnString.
    for (i = 0; i < s.length; i++){   
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return returnString;
}

function daysInFebruary (year){
	// February has 29 days in any year evenly divisible by four,
    // EXCEPT for centurial years which are not also divisible by 400.
    return (((year % 4 == 0) && ( (!(year % 100 == 0)) || (year % 400 == 0))) ? 29 : 28 );
}
function DaysArray(n) {
	for (var i = 1; i <= n; i++) {
		this[i] = 31;
		if (i==4 || i==6 || i==9 || i==11) {this[i] = 30}
		if (i==2) {this[i] = 29}
   } 
   return this;
}