var fields = new Array('email', 'phone', 'noreply');

function showRequiredFields(frmName, selName) {
    try {
    	var selPreferredResponse = eval('document.' + frmName + '.' + selName);
        var selectedfield = selPreferredResponse.options[selPreferredResponse.selectedIndex].value;
        for (i = 0; i < fields.length; i++) {
            hide(fields[i]);
        }    
        show(selectedfield);
    }
    catch (err){
    } 
            
}


function hideFields() {
    try {
        for (i = 0; i < fields.length; i++) {
            hide(fields[i]);
        }    
    }
    catch (err)
    {
        alert(err.description);
    }
}

function IsInteger(s) {
    try {
	    for (var i = 0; i < s.length; i++) {
		    var c = s.charAt(i);
		    if (!((c >= "0") && (c <= "9"))) {
			    return false;
		    }
	    }
	    return true;
	}
	catch (err)
    {
        alert(err.description);
    }
}