// eng etc - > false
	
	function checkEnglishOnly( englishChar ) {  
	    
	    if ( englishChar == null ) return false ;
	       
	    for( var i=0; i < englishChar.length;i++){          
	       var c=englishChar.charCodeAt(i);       
	       if( !( (  0x61 <= c && c <= 0x7A ) || ( 0x41 <= c && c <= 0x5A ) ) ) {         
	        return false ;       
	       }
	     }      
	    return true ;
	} 
	
	
	// digit etc -> false
	function checkDigitOnly( digitChar ) {  
	    
	    if ( digitChar == null ) return false ;
	       
	    for(var i=0;i<digitChar.length;i++){          
	       var c=digitChar.charCodeAt(i);       
	       if( !(  0x30 <= c && c <= 0x39 ) ) {         
	        return false ;       
	       }
	     }
	    return true ;
	}


	// eng, digit etc -> false
	function checkEngDigOnly( tempChar ) {
	    if ( tempChar == null ) return false ;
	    for(var i=0;i<tempChar.length;i++){          
	       var c=tempChar.charCodeAt(i);       
	       if( !( (0x30 <= c && c <= 0x39 ) || (0x61 <= c && c <= 0x7A ) || (0x41 <= c && c <= 0x5A)) ) {         
	        return false ;       
	       }
	     }      
	    return true ;
	}