ie7 fix

For those of you that read my previous post mentioning how IE7 may be used to emulate the ^= selector in CSS, here is what needs to be done.

Download a copy of IE7 and unzip it. Overwrite /ie7/ie7-css3.js with /ie7/src/ie7-css3.js. Edit /ie7/ie7-css3.js and change:

attributeTests["^="] = function(attribute, value) {
	return "/^" + unquote(value) + "/.test(" + attribute + ")";
};

to:

attributeTests["^="] = function(attribute, value) {
	value=value.replace(/\//g,'\/');
	return "/^" + unquote(value) + "/.test(" + attribute + ")";
};

It may be safe (although less readable) to change it to the following instead, if you wish:

attributeTests["^="] = function(attribute, value) {
	return "/^" + unquote( value.replace(/\//g,'\/') ) + "/.test(" + attribute + ")";
};

The reason for the above changes is that the return line returns a regexp which the script uses to determine a match. Unfortunately, that regexp breaks if an un-escaped ‘/’ is entered. The above code escapes all forward-slashes.