diff --git a/build/kalendae.css b/build/kalendae.css
index 8b36473..91476f8 100644
--- a/build/kalendae.css
+++ b/build/kalendae.css
@@ -156,6 +156,11 @@
 	color:#666;
 }
 
+.kalendae .k-header.k-active span {
+	cursor: pointer;
+	border-radius:3px;
+}
+
 .kalendae .k-days span {
 	text-align:right;
 	width:20px;
@@ -193,7 +198,8 @@
 }
 
 /** Selected day, when inside the selectable area **/
-.kalendae .k-days span.k-selected.k-active {
+.kalendae .k-days span.k-selected.k-active,
+.kalendae .k-header.k-active span.k-selected {
 	background:#7EA0E2;
 	color:white;
 }
@@ -212,7 +218,8 @@
 }
 
 /** Selectable day, hovered **/
-.kalendae .k-days span.k-active:hover {
+.kalendae .k-days span.k-active:hover,
+.kalendae .k-days span.k-active.k-day-hover-active {
 	border-color:#666;
 }
 
diff --git a/index.html b/index.html
index 9b681ee..50b8751 100644
--- a/index.html
+++ b/index.html
@@ -83,7 +83,31 @@ <h1>Kalendae</h1>
 			selected:[Kalendae.moment().subtract({M:1}), Kalendae.moment().add({M:1})]
 		});
 
+	</script>
 
+	<p>Month header day select (Multi-select)</p>
+		<script type="text/javascript" charset="utf-8">
+		var firstDay = Kalendae.moment().startOf('month').weekday(2),
+			secondDay = Kalendae.moment().startOf('month').weekday(4),
+			endMonth = Kalendae.moment().endOf('month');
+			selected = [];
+
+		while(firstDay <= endMonth) {
+			if (firstDay >= Kalendae.moment().startOf('month')) {
+				selected.push(firstDay.clone());
+				selected.push(secondDay.clone());
+			}
+			firstDay.add(7, 'd');
+			secondDay.add(7, 'd');
+		}
+
+		new Kalendae({
+			attachTo:document.body,
+			months:3,
+			mode:'multiple',
+			dayHeaderClickable: true,
+			selected: selected
+		});
 	</script>
 
 	<p>Week Select</p>
@@ -173,7 +197,7 @@ <h1>Kalendae</h1>
 	<hr>
 	So is the one on this input.
 	<input type="text" class="auto-kal">
-	
+
 	<hr>
 	<div style="width: 300px;height: 300px;overflow:scroll;border:1px solid black;">
 		Scroll down and left to find an input.
diff --git a/readme.md b/readme.md
index 5ec37cc..b227120 100644
--- a/readme.md
+++ b/readme.md
@@ -122,6 +122,8 @@ The following options are available for configuration.
 
 - `dayOutOfMonthClickable`: Allow clicks on days that fall outside of the currently focused month. Default is `false`.
 
+- `dayHeaderClickable`: Allow click on header days to select all instances of the selected day name. It only works in "multiple" mode.  Default is `false`.
+
 - `useYearNav`: Include the double-arrow year navigation. Default is `true`.
 
 - `side`: Chooses the side on which to display the picker. Default is `bottom`.
@@ -248,4 +250,3 @@ To create a minified version, run `make minified`.  If the minified file is blan
 ##License
 
 Kalendae is released under an MIT license and is freely distributable.
-
diff --git a/src/main.js b/src/main.js
index 0045381..3c16838 100644
--- a/src/main.js
+++ b/src/main.js
@@ -121,10 +121,31 @@ var Kalendae = function (targetElement, options) {
 		$caption = util.make('span', {'class':classes.caption}, $title);  //title caption
 
 		//column headers
-		$header = util.make('div', {'class':classes.header}, $cal);
+		$header = util.make('div', {'class':classes.header + ' ' + (opts.dayHeaderClickable == true ? classes.dayActive : '')}, $cal);
 		i = 0;
 		do {
-			$span = util.make('span', {}, $header);
+			$span = util.make('span', {'data-day':i}, $header);
+
+			if (opts.dayHeaderClickable == true && opts.mode == 'multiple') {
+				$span.addEventListener("mouseover", function(e){
+					var daysContainer = e.target.parentNode.nextSibling;
+						daysToHover = daysContainer.getElementsByClassName('k-day-week-' + e.target.getAttribute('data-day'));
+					if (daysToHover.length > 0) {
+						for (var i = 0; i < daysToHover.length; i++) {
+							if (util.hasClassName(daysToHover[i], classes.dayActive)) util.addClassName(daysToHover[i], 'k-day-hover-active');
+						}
+					}
+				});
+				$span.addEventListener("mouseleave", function(e){
+					var daysContainer = e.target.parentNode.nextSibling;
+						daysToHover = daysContainer.getElementsByClassName('k-day-week-' + e.target.getAttribute('data-day'));
+					if (daysToHover.length > 0) {
+						for (var i = 0; i < daysToHover.length; i++) {
+							if (util.hasClassName(daysToHover[i], classes.dayActive)) util.removeClassName(daysToHover[i], 'k-day-hover-active');
+						}
+					}
+				});
+			}
 			$span.innerHTML = columnHeaders[i];
 		} while (++i < 7);
 
@@ -146,6 +167,7 @@ var Kalendae = function (targetElement, options) {
 
 		//store each calendar view for easy redrawing
 		calendars.push({
+			header:$header,
 			caption:$caption,
 			days:dayNodes
 		});
@@ -223,6 +245,20 @@ var Kalendae = function (targetElement, options) {
 				}
 			}
 			return false;
+
+		} else if (util.hasClassName(target.parentNode, classes.header)) {
+			if (opts.mode == 'multiple' && opts.dayHeaderClickable == true) {
+				var parentSelected = util.hasClassName(target, classes.daySelected),
+					month =  target.parentNode.parentNode.getAttribute('data-datestart'),
+					dayToSelect = target.getAttribute('data-day');
+
+				if (parentSelected == true) {
+					self.monthDaySelected(month, dayToSelect, true);
+				} else {
+					self.monthDaySelected(month, dayToSelect, false);
+				}
+			}
+			return false;
 		}
 
 		return false;
@@ -247,6 +283,7 @@ Kalendae.prototype = {
 		selected              :null,            /* dates already selected.  can be string, date, or array of strings or dates. */
 		mode                  :'single',        /* single, multiple, range */
 		dayOutOfMonthClickable:false,
+		dayHeaderClickable    :false,
 		format                :null,            /* string used for parsing dates. */
 		subscribe             :null,            /* object containing events to subscribe to */
 
@@ -444,6 +481,23 @@ Kalendae.prototype = {
 		this.draw();
 	},
 
+	monthDaySelected: function(month, daynumber, unselected) {
+		var days = moment(month).startOf('month').weekday(daynumber),
+			endMonth = moment(month).endOf('month');
+			selected = [];
+
+		while(days <= endMonth) {
+			if (days >= moment(month).startOf('month') && !this.direction(days)) {
+				if (unselected) {
+					this.removeSelected(moment(days).hours(12));
+				} else {
+					this.addSelected(moment(days).hours(12));
+				}
+			}
+			days.add(7, 'd');
+		}
+	},
+
 	makeSelectedDateVisible: function (date) {
 		outOfViewMonth = moment(date).date('1').diff(this.viewStartDate,'months');
 
@@ -479,8 +533,10 @@ Kalendae.prototype = {
 			klass,
 			i=0, c,
 			j=0, k,
+			t=0, z,
 			w,
 			s,
+			headers,
 			dateString,
 			opts = this.settings,
 			diff;
@@ -493,9 +549,19 @@ Kalendae.prototype = {
 			//if the first day of the month is less than our week start, back up a week
 
 			cal = this.calendars[i];
+
+			cal.header.parentNode.setAttribute('data-datestart', month.format(this.settings.dayAttributeFormat));
+
 			cal.caption.innerHTML = month.format(this.settings.titleFormat);
 			j = 0;
 			w = 0;
+			t = 0;
+			headers = [];
+			for (var z = 0; z < 7; z++) {
+				util.removeClassName(cal.header.children[z], classes.daySelected);
+				headers[z] = 0;
+			}
+
 			do {
 				if (opts.mode == 'week') {
 					if (((j % 7) === 0) && (j !== 0)) {
@@ -512,6 +578,13 @@ Kalendae.prototype = {
 
 				if (s) klass.push(({'-1':classes.dayInRange,'1':classes.daySelected, 'true':classes.daySelected})[s]);
 
+				if (opts.dayHeaderClickable == true && opts.mode == 'multiple') {
+					klass.push('k-day-week-' + day.weekday());
+					if ((s == true || s == 1) && !this.direction(day) && month.format('M') == day.format('M')) {
+						headers[day.weekday()] = headers[day.weekday()] + 1;
+					}
+				}
+
 				if (day.month() != month.month()) klass.push(classes.dayOutOfMonth);
 				else klass.push(classes.dayInMonth);
 
@@ -529,6 +602,25 @@ Kalendae.prototype = {
 
 				day.add(1, 'days');
 			} while (++j < 42);
+			z = 0;
+			if (headers.length > 0) {
+				do {
+					if (headers[z] > 0) {
+						var firstDay = Kalendae.moment(month).startOf('month').weekday(z),
+							startMonth = Kalendae.moment(month).startOf('month');
+							endMonth = Kalendae.moment(month).endOf('month');
+						t = 0;
+						do {
+							if (firstDay >= startMonth && !this.direction(firstDay)) t++;
+							firstDay.add(7, 'd');
+						} while(firstDay <= endMonth)
+
+						if (t == headers[z]) util.addClassName(cal.header.children[z], classes.daySelected);
+						else util.removeClassName(cal.header.children[z], classes.daySelected);
+					}
+				} while(++z < headers.length)
+			}
+
 			month.add(1, 'months');
 		} while (++i < c);