var ch_radical    = "√";
var ch_plus_minus = "±";
var ch_minus      = "–";  // en-dash
var ch_imag       = "j"; // you might prefer "i"

var msg_cannot_factor = "<i>I cannot factor this expression</i>";
var msg_results_here = "Results will be shown here.";
var msg_invalid_input = "Invalid input. You haven't entered an expression I can understand.";
var msg_blank_input = "Please enter a polynomial in the box.";
var msg_unsupported_browser = "<h1>Your browser doesn't seem to support JavaScript 1.2; " +
		  "Please upgrade your browser.</h1>";

var goes_to = "==>"; // you may wish to use an image.
//var goes_to = "<img src='img/g.gif'>";