diffYears=-1, diffDays=-1, diffHours=-1, diffMins=-1
var compDat = new Date("May 02, 1999 12:00:00") 
var msPerYears = 365 * 24 * 60 * 60 * 1000
var msPerDay = 24 * 60 * 60 * 1000 
var msPerHour = 60 * 60 * 1000 
var msPerMin = 60 * 1000 
var msPerSec = 1000 

function clock(){ 
    var today = new Date() 
	var changeY = diffYears
    var changeD = diffDays 
    var changeH = diffHours 
    var changeMin = diffMins     
    var diffMs = today.getTime() - compDat.getTime() 

    diffYears = Math.floor(diffMs / msPerYears) 
    diffMs -= diffYears * msPerYears 

    diffDays = Math.floor(diffMs / msPerDay) 
    diffMs -= diffDays * msPerDay 

    diffHours = Math.floor(diffMs / msPerHour) 
    diffMs -= diffHours * msPerHour 
	
    diffMins = Math.floor(diffMs / msPerMin) 
    diffMs -= diffMins * msPerMin 

    var diffSecs = Math.floor(diffMs / msPerSec)

    if(changeY!=diffYears) document.forms[0].years.value=diffYears 
    if(changeD!=diffDays) document.forms[0].days.value=diffDays 
    if(changeH!=diffHours) document.forms[0].hours.value=diffHours 
    if(changeMin!=diffMins) document.forms[0].mins.value=diffMins
    
    document.forms[0].secs.value=diffSecs
    timerID = setTimeout("clock()",1000)
}