make validate useranme without Regex, must be alphanumeric : function isUser(username)
					{
					var numaric = username;
					for(var j=0; j<numaric.length; j++)
					{
					var alphaa = numaric.charAt(j);
					var hh = alphaa.charCodeAt(0);
					if((hh > 96 && hh<123) || (hh > 64 && hh<91) ==false){ //A-Z - a-z
						
					}else if((hh > 47 && hh<58) ==false){ //0-9
						
					}else if( true == (hh > 96 && hh<123) || (hh > 64 && hh<91) || (hh > 47 && hh<58)){ //A~Z - a~z - 1~9
					}else{
						alert("Your Alpha Numeric Test Falid");
						return false;
					}
					alert("Your Alpha Numeric Test passed");
						return true;
					}
					}