in src/main/resources/js/bootstrap-2.3.2.js [1217:1256]
, applyPlacement: function(offset, placement){
var $tip = this.tip()
, width = $tip[0].offsetWidth
, height = $tip[0].offsetHeight
, actualWidth
, actualHeight
, delta
, replace
$tip
.offset(offset)
.addClass(placement)
.addClass('in')
actualWidth = $tip[0].offsetWidth
actualHeight = $tip[0].offsetHeight
if (placement == 'top' && actualHeight != height) {
offset.top = offset.top + height - actualHeight
replace = true
}
if (placement == 'bottom' || placement == 'top') {
delta = 0
if (offset.left < 0){
delta = offset.left * -2
offset.left = 0
$tip.offset(offset)
actualWidth = $tip[0].offsetWidth
actualHeight = $tip[0].offsetHeight
}
this.replaceArrow(delta - width + actualWidth, actualWidth, 'left')
} else {
this.replaceArrow(actualHeight - height, actualHeight, 'top')
}
if (replace) $tip.offset(offset)
}