// assign date to variable ModifyDate
var ModifyDate = new Date(document.lastModified)
// write date to variable showAs
// (note that months are numbered from 0 to 11)
var showAs = leadZero (ModifyDate.getDate()) +"-"+ leadZero (ModifyDate.getMonth() + 1) +"-"+ ModifyDate.getFullYear()
// write the result of lastModified function to HTML document
document.write (showAs);

// function to add a lead zero to figures less than 10
function leadZero (fig) {
	if (fig < 10) {
		fig = "0"+ fig
	}
	return fig
}