CPackageSelectStructure::WizAttachEvent

function WizAttachEvent()
			{
				var form = document.forms["{$formName}"];
				if (!form)
					return;

				var nextButton = form.elements["{$nextButton}"];
				var prevButton = form.elements["{$prevButton}"];
				if (nextButton)
					nextButton.onclick = WizSaveSiteTree;

				if (prevButton)
					prevButton.onclick = WizSaveSiteTree;

			}