function inttohex(p_digit) {
	switch (p_digit & 0xf) {
		case 0: return("0");
		case 1: return("1");
		case 2: return("2");
		case 3: return("3");
		case 4: return("4");
		case 5: return("5");
		case 6: return("6");
		case 7: return("7");
		case 8: return("8");
		case 9: return("9");
		case 10:return("A");
		case 11:return("B");
		case 12:return("C");
		case 13:return("D");
		case 14:return("E");
		case 15:return("F");
	}
	return("X");
}
function urlencode(p_string) {
	if (p_string == null)
	   return("");
   var len = p_string.length;
	var retstr = "";
	for (var i=0; i<len; i++) {
		var c = p_string.charAt(i);
		var uc = p_string.charCodeAt(i);
	   if (c == '|') {
		   retstr += "||";
		}
	   else if ((c >= 'a' && c <= 'z')     
	            || (c >= 'A' && c <= 'Z')  
	            || (c >= '0' && c <= '9')) {
		   retstr += c;
		}
	   else if (uc < 256) {
		   retstr += "%";
		   retstr += inttohex((uc >> 4) & 0xf);
		   retstr += inttohex(uc & 0xf);
		}
	   else {
		   retstr += "|u";
		   retstr += inttohex((uc >> 4) & 0xf);
		   retstr += inttohex(uc & 0xf);
		   retstr += inttohex((uc >> 12) & 0xf);
		   retstr += inttohex((uc >> 8) & 0xf);
		}
	}
	return(retstr);
}
function cws(p_string) {
	if (p_string == null)
	   return("");
   var len = p_string.length;
	var retstr = "";
	for (var i=0; i<len; i++) {
		var c = p_string.charAt(i);
		var uc = p_string.charCodeAt(i);
	   if ((c >= 'a' && c <= 'z')     
	            || (c >= 'A' && c <= 'Z')  
	            || (c >= '0' && c <= '9'))
		   retstr += c;
		else if (uc == 0x09 || uc == 0x0a || uc == 0x0d  ||
					 (uc >= 0x20 && uc <=0x7e) ||
					 (uc >= 0x80 && uc <=0xd7ff) ||
					 (uc >= 0xe000 && uc <=0xf8ff) ||
					 (uc >= 0xf900 && uc <=0xfffd) ||
					 (uc >= 0x10000 && uc <=0x10ffff))
		   retstr += "&#"+uc+";";
		else
		   retstr += "&#63;";
	}
	return(retstr);
}
function validateEmail(p_emailAddr) {
	var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
	if(reg.test(p_emailAddr) == false) {
		alert("Invalid Email Address!");
		return(false);
	} else {
		return(true);
	}
}
String.prototype.trim = function() {
	return this.replace(/^\s+|\s+$/g,"");
}
String.prototype.ltrim = function() {
	return this.replace(/^\s+/,"");
}
String.prototype.rtrim = function() {
	return this.replace(/\s+$/,"");
}
String.prototype.startsWith=function(prefix){
 return this.substring(0,prefix.length)==prefix;
}
String.prototype.endsWith=function(suffix){
 return this.substring(this.length-suffix.length)==suffix;
}