function checkEnclosures(sVal) {
	if (sVal.indexOf('{') >= 0 || sVal.indexOf('}') >= 0 ||
    	sVal.indexOf('[') >= 0 || sVal.indexOf(']') >= 0) {    	
    	var bReturn = window.confirm(
    		'Data is stored in ChemIDPlus converts brackets [] or braces {} to\n'+
    		'parenthesis. Your search string contains brackets and/or braces. \n'+
    		'Would you like your search string auto-converted to conform to \n'+
    		'ChemIDPlus parenthesis format?'
    	);
    	if (bReturn) sVal = sVal.replace('[', '(').replace(']', ')').replace('{', '(').replace('}', ')');
	} 
	return sVal;
}