Added the Speed Test Suite. Can be made by doing 'make speed'.

Makefile

@@ -5,6 +5,7 @@ PREFIX = .
 DOCS_DIR = ${PREFIX}/docs
 TEST_DIR = ${PREFIX}/test
 DIST_DIR = ${PREFIX}/dist
+SPEED_DIR = ${PREFIX}/speed
 PLUG_DIR = ../plugins
 
 BASE_FILES = ${SRC_DIR}/jquery/jquery.js\
@@ -148,6 +149,21 @@ docs: ${JQ}
 	@@echo "Documentation Built"
 	@@echo
 
+speed: ${JQ}
+	@@echo "Building Speed Test Suite"
+
+	@@echo " - Making Speed Test Suite Directory:" ${SPEED_DIR}
+	@@mkdir -p ${SPEED_DIR}
+
+	@@echo " - Copying over script files."
+	@@cp -f ${BUILD_DIR}/speed/index.html ${SPEED_DIR}
+	@@cp -f ${BUILD_DIR}/speed/benchmarker.css ${SPEED_DIR}
+	@@cp -f ${BUILD_DIR}/speed/benchmarker.js ${SPEED_DIR}
+	@@cp -f ${BUILD_DIR}/speed/jquery-1.1.2.js ${SPEED_DIR}
+
+	@@echo "Speed Test Suite Built"
+	@@echo
+
 clean:
 	@@echo "Removing Distribution directory:" ${DIST_DIR}
 	@@rm -rf ${DIST_DIR}
@@ -157,3 +173,6 @@ clean:
 
 	@@echo "Removing Documentation directory:" ${DOCS_DIR}
 	@@rm -rf ${DOCS_DIR}
+
+	@@echo "Removing Speed Test Suite directory:" ${SPEED_DIR}
+	@@rm -rf ${SPEED_DIR}

build/speed/benchmarker.css

+
+	 .dialog {
+	   margin-bottom: 1em;
+	 }
+	 a.expand {
+	   background: #e3e3e3;
+	 }
+
+   div#time-test {
+     font-family: Arial, Helvetica, sans-serif;
+     font-size: 62.5%;
+   }
+
+   td.test button {
+     float: right;
+   }
+
+   table {
+     border: 1px solid #000;
+   }
+
+   table td, table th {
+     border: 1px solid #000;
+     padding: 10px;
+   }
+
+   td.winner {
+     background-color: #cfc;
+   }
+
+   td.tie {
+     background-color: #ffc;
+   }
+
+   td.fail {
+     background-color: #f99;
+     font-weight: bold;
+     text-align: center;
+   }
+
+   tfoot td {
+     text-align: center;
+   }
+
+	 #time-test {
+	   margin: 1em 0;
+	   padding: .5em;
+	   background: #e3e3e3;
+	 }
+	 #time-taken {
+	   font-weight: bold;
+	 }
+
+   span.wins {
+     color: #330;
+   }
+
+   span.fails {
+     color: #900;
+   }
+
+   div.buttons {
+     margin-top: 10px;
+     margin-bottom: 10px;
+   }
\ No newline at end of file

build/speed/benchmarker.js

+  jQuery.benchmarker.tests = [
+		"*",
+		"body", "body div", "div", 
+		"div div div", "div div", ".dialog", "div.dialog", "div .dialog",
+		"#speech5", "div#speech5", "div #speech5", "div > div", "div.scene div.dialog",
+		"div#scene1.scene div.dialog div", "#scene1 #speech1", "body > div.dialog div#speech5",
+		"div:nth-child(even)", "div:nth-child(odd)",
+		"div:nth-child(1)", "div:nth-child(2n)",
+		"div:nth-child(2n+3)", "div:first-child",
+		"div:last-child", "div:only-child",
+		"div:contains(CELIA)",
+		"div ~ div", "div + div",
+		"div[@class]", "div[@class=dialog]", "div[@class!=dialog]", 
+		"div[@class^=dialog]", "div[@class$=dialog]", "div[@class*=dialog]"
+		]
+
+  jQuery.fn.benchmark = function() {
+    this.each(function() {
+      try {
+        jQuery(this).parent().children("*:gt(1)").remove();
+      } catch(e) { }
+    })
+    var times = 5;
+    jQuery("#times").html(times);
+    jQuery.benchmarker.startingList = this.get();
+    benchmark(this.get(), times, jQuery.benchmarker.libraries);
+  }
+
+  jQuery(function() {
+    for(i = 0; i < jQuery.benchmarker.tests.length; i++) {
+      jQuery("tbody").append("<tr><td class='test'>" + jQuery.benchmarker.tests[i] + "</td></tr>");
+    }
+    jQuery("tbody tr:first-child").remove();
+    jQuery("td.test").before("<td><input type='checkbox' checked='checked' /></td>");
+    jQuery("button.runTests").bind("click", function() {
+      jQuery('td[input:checked] + td.test').benchmark();
+    });
+
+    jQuery("button.retryTies").bind("click", function() { jQuery("tr[td.tie] td.test").benchmark() })
+
+    jQuery("button.selectAll").bind("click", function() { jQuery("input[@type=checkbox]").each(function() { this.checked = true }) })
+    jQuery("button.deselectAll").bind("click", function() { jQuery("input[@type=checkbox]").each(function() { this.checked = false }) })
+
+    jQuery("#addTest").bind("click", function() {
+      jQuery("table").append("<tr><td><input type='checkbox' /></td><td><input type='text' /><button>Add</button></td></tr>");
+      jQuery("div#time-test > button").each(function() { this.disabled = true; })
+      jQuery("tbody tr:last button").bind("click", function() {
+        var td = jQuery(this).parent();
+        td.html("<button>-</button>" + jQuery(this).prev().val()).addClass("test");
+        jQuery("div#time-test > button").each(function() { this.disabled = false; })
+        jQuery("button", td).bind("click", function() { jQuery(this).parents("tr").remove(); })
+      })
+    })
+
+    var headers = jQuery.map(jQuery.benchmarker.libraries, function(i) {
+      return "<th>" + i + "</th>"
+    }).join("");
+
+    jQuery("thead tr").append(headers);
+
+    var footers = "";
+    for(i = 0; i < jQuery.benchmarker.libraries.length; i++)
+      footers += "<th></th>"
+
+    var wlfooters = "";
+    for(i = 0; i < jQuery.benchmarker.libraries.length; i++)
+      wlfooters += "<td><span class='wins'>W</span> / <span class='fails'>F</span></th>"
+
+    jQuery("tfoot tr:first").append(footers);
+    jQuery("tfoot tr:last").append(wlfooters);
+
+  });
+
+   benchmark = function(list, times, libraries) {
+     if(list[0]) {
+       var times = times || 50;
+       var el = list[0];
+       var code = jQuery(el).text().replace(/^-/, "");
+         if(!libraries[0].match(/^jQ/)) {
+           code = code.replace(/@/, "");
+         }
+         var timeArr = []
+         for(i = 0; i < times + 2; i++) {
+           var time = new Date()
+           try {
+             window[libraries[0]](code);
+           } catch(e) { }
+           timeArr.push(new Date() - time);
+         }
+         var diff = Math.sum(timeArr) - Math.max.apply( Math, timeArr )
+		- Math.min.apply( Math, timeArr );
+         try {
+           var libRes = window[libraries[0]](code);
+           var jqRes = jQuery(code);
+           if(((jqRes.length == 0) && (libRes.length != 0)) ||
+             (libRes.length > 0 && (jqRes.length == libRes.length)) ||
+             ((libraries[0] == "cssQuery" || libraries[0] == "jQuery") && code.match(/nth\-child/) && (libRes.length > 0)) ||
+             ((libraries[0] == "jQold") && jqRes.length > 0)) {
+             jQuery(el).parent().append("<td>" + Math.round(diff / times * 100) / 100 + "ms</td>");
+           } else {
+             jQuery(el).parent().append("<td class='fail'>FAIL</td>");
+           }
+         } catch(e) {
+           jQuery(el).parent().append("<td class='fail'>FAIL</td>");
+         }
+       setTimeout(benchmarkList(list, times, libraries), 100);
+     } else if(libraries[1]) {
+       benchmark(jQuery.benchmarker.startingList, times, libraries.slice(1));
+     } else {
+       jQuery("tbody tr").each(function() {
+         var winners = jQuery("td:gt(1)", this).min(2);
+         if(winners.length == 1) winners.addClass("winner");
+         else winners.addClass("tie");
+       });
+       setTimeout(count, 100);
+     }
+   }
+
+  function benchmarkList(list, times, libraries) {
+    return function() {
+      benchmark(list.slice(1), times, libraries);
+    }
+  }
+
+ function count() {
+   for(i = 3; i <= jQuery.benchmarker.libraries.length + 2 ; i++) {
+     var fails = jQuery("td:nth-child(" + i + ").fail").length;
+     var wins = jQuery("td:nth-child(" + i + ").winner").length;
+     jQuery("tfoot tr:first th:eq(" + (i - 1) + ")")
+      .html("<span class='wins'>" + wins + "</span> / <span class='fails'>" + fails + "</span>");
+   }
+ }
+
+
+ jQuery.fn.maxmin = function(tolerance, maxmin, percentage) {
+   tolerance = tolerance || 0;
+   var target = Math[maxmin].apply(Math, jQuery.map(this, function(i) {
+     var parsedNum = parseFloat(i.innerHTML.replace(/[^\.\d]/g, ""));
+     if(parsedNum || (parsedNum == 0)) return parsedNum;
+   }));
+   return this.filter(function() {
+     if( withinTolerance(parseFloat(this.innerHTML.replace(/[^\.\d]/g, "")), target, tolerance, percentage) ) return true;
+   })
+ }
+
+ jQuery.fn.max = function(tolerance, percentage) { return this.maxmin(tolerance, "max", percentage) }
+ jQuery.fn.min = function(tolerance, percentage) { return this.maxmin(tolerance, "min", percentage) }
+
+ function withinTolerance(number, target, tolerance, percentage) {
+   if(percentage) { var high = target + ((tolerance / 100) * target); var low = target - ((tolerance / 100) * target); }
+   else { var high = target + tolerance; var low = target - tolerance; }
+   if(number >= low && number <= high) return true;
+ }
+
+ Math.sum = function(arr) {
+   var sum = 0;
+   for(i = 0; i < arr.length; i++) sum += arr[i];
+   return sum;
+ }