--- jquery.history.js.orig	2009-10-08 15:46:51.000000000 +0900
+++ jquery.history.js	2009-10-08 15:46:51.000000000 +0900
@@ -16,6 +16,7 @@
 	historyCurrentHash: undefined,
 	historyCallback: undefined,
 	historyIframeSrc: undefined,
+	historyNeedIframe: jQuery.browser.msie && (jQuery.browser.version < 8 || document.documentMode < 8),
 	
 	historyInit: function(callback, src){
 		jQuery.historyCallback = callback;
@@ -23,12 +24,12 @@
 		var current_hash = location.hash.replace(/\?.*$/, '');
 		
 		jQuery.historyCurrentHash = current_hash;
-		// if ((jQuery.browser.msie) && (jQuery.browser.version < 8)) {
-		if (jQuery.browser.msie) {
+
+		if (jQuery.historyNeedIframe) {
 			// To stop the callback firing twice during initilization if no hash present
 			if (jQuery.historyCurrentHash == '') {
 			jQuery.historyCurrentHash = '#';
-		}
+			}
 		
 			// add hidden iframe for IE
 			jQuery("body").prepend('<iframe id="jQuery_history" style="display: none;"'+
@@ -64,8 +65,7 @@
 	},
 	
 	historyCheck: function(){
-		// if ((jQuery.browser.msie) && (jQuery.browser.version < 8)) {
-		if (jQuery.browser.msie) {
+		if (jQuery.historyNeedIframe) {
 			// On IE, check for location.hash of iframe
 			var ihistory = jQuery("#jQuery_history")[0];
 			var iframe = ihistory.contentDocument || ihistory.contentWindow.document;
@@ -134,8 +134,7 @@
 		}
 		jQuery.historyCurrentHash = newhash;
 		
-		// if ((jQuery.browser.msie) && (jQuery.browser.version < 8)) {
-		if (jQuery.browser.msie) {
+		if (jQuery.historyNeedIframe) {
 			var ihistory = jQuery("#jQuery_history")[0];
 			var iframe = ihistory.contentWindow.document;
 			iframe.open();