Answer by NovaYear for How do I get the difference between two Dates in JavaScript?

alternative modificitaion extended code..

http://jsfiddle.net/vvGPQ/48/

showDiff();function showDiff(){var date1 = new Date("2013/01/18 06:59:00");   var date2 = new Date();//Customise date2 for your required future timevar diff = (date2 - date1)/1000;var diff = Math.abs(Math.floor(diff));var years = Math.floor(diff/(365*24*60*60));var leftSec = diff - years * 365*24*60*60;var month = Math.floor(leftSec/((365/12)*24*60*60));var leftSec = leftSec - month * (365/12)*24*60*60;    var days = Math.floor(leftSec/(24*60*60));var leftSec = leftSec - days * 24*60*60;var hrs = Math.floor(leftSec/(60*60));var leftSec = leftSec - hrs * 60*60;var min = Math.floor(leftSec/(60));var leftSec = leftSec - min * 60;document.getElementById("showTime").innerHTML = "You have "+ years +" years "+ month +" month "+ days +" days "+ hrs +" hours "+ min +" minutes and "+ leftSec +" seconds the life time has passed.";setTimeout(showDiff,1000);}