function openmap()
{
	var cWidth=window.screen.width;
	var cHeight=window.screen.height;
	
	var leftOffset=10;
	var topOffset=10;
	
	var win_w=750;
	var win_h=700;
	var win_scroll=0;
	
	if(cHeight && cWidth)
	{
		leftOffset=Math.ceil((cWidth-win_w)/2);
		topOffset=Math.ceil((cHeight-win_h)/2);
		
		if(cHeight<700)
		{
			win_w+=20;
			win_h=550;
			win_scroll=1;
		}
	}
	
	var a=window.open('map.html', 'map', 'width='+win_w+',height='+win_h+',top='+topOffset+',left=' + leftOffset + ',scrollbars=' + win_scroll);
	a.focus();
	
	return false;
}