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-rw-r--r--httemplate/elements/cssexpr.js66
1 files changed, 66 insertions, 0 deletions
diff --git a/httemplate/elements/cssexpr.js b/httemplate/elements/cssexpr.js
new file mode 100644
index 000000000..c434d8da0
--- /dev/null
+++ b/httemplate/elements/cssexpr.js
@@ -0,0 +1,66 @@
+function constExpression(x) {
+ return x;
+}
+
+function simplifyCSSExpression() {
+ try {
+ var ss,sl, rs, rl;
+ ss = document.styleSheets;
+ sl = ss.length
+
+ for (var i = 0; i < sl; i++) {
+ simplifyCSSBlock(ss[i]);
+ }
+ }
+ catch (exc) {
+ //alert("Got an error while processing css. The page should still work but might be a bit slower");
+ throw exc;
+ }
+}
+
+function simplifyCSSBlock(ss) {
+ var rs, rl;
+
+ for (var i = 0; i < ss.imports.length; i++)
+ simplifyCSSBlock(ss.imports[i]);
+
+ if (ss.cssText.indexOf("expression(constExpression(") == -1)
+ return;
+
+ rs = ss.rules;
+ rl = rs.length;
+ for (var j = 0; j < rl; j++)
+ simplifyCSSRule(rs[j]);
+
+}
+
+function simplifyCSSRule(r) {
+ var str = r.style.cssText;
+ var str2 = str;
+ var lastStr;
+ do {
+ lastStr = str2;
+ str2 = simplifyCSSRuleHelper(lastStr);
+ } while (str2 != lastStr)
+
+ if (str2 != str)
+ r.style.cssText = str2;
+}
+
+function simplifyCSSRuleHelper(str) {
+ var i, i2;
+ i = str.indexOf("expression(constExpression(");
+ if (i == -1) return str;
+ i2 = str.indexOf("))", i);
+ var hd = str.substring(0, i);
+ var tl = str.substring(i2 + 2);
+ var exp = str.substring(i + 27, i2);
+ var val = eval(exp)
+ return hd + val + tl;
+}
+
+if (/msie/i.test(navigator.userAgent) && window.attachEvent != null) {
+ window.attachEvent("onload", function () {
+ simplifyCSSExpression();
+ });
+}