rem: var nChar = COLCHAR.indexOf( val[ val.length - 1 ] ) - 1; 
add: var nChar = COLCHAR.indexOf( val.charAt( val.length - 1 ) ) - 1; 
context: function decrement( val ){	var nChar = COLCHAR.indexOf( val[ val.length - 1 ] ) - 1;		if( nChar >= 0 )	{		return val.substr( 0, val.length - 1 ) + COLCHAR[ nChar ];	}	else	{		return decrement( val.substr( 0, val.length - 1 ) ) + COLCHAR[ COLCHAR.length - 1 ];	}}
meta: 1064	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/1064/3c88012e85bd74ecf5d5c762ba03eb0a6bf847d5/grid.js/buggy/tiki/lib/sheet/grid.js