Map displayed in tab (with jquery tabs ui) is corrupted

I spent a whole day figure this out, but i tought i will share the fix, save other people's time who have the same problem:
simply add this javascript to pages where gmap is loaded from tabs and set body tag's onload to call fixgmap():

	function fixgmap(){
	
		function fixgmapclicked(){
		
		for(prop in Drupal.gmaps.map.maps){
			Drupal.gmaps.map.maps[prop].gmap2.checkResize()
		}

		}
		
		$(document).ready(function() {
			$("#tabs-middle").tabs();
			$('#tabs-middle')
			.bind('tabsshow', fixgmapclicked);
		});
	} 

I hope it will help and save someone's time:)