If i need future yearsprevious years both what i need to do?

To get -100 years to +100 years, change this line:

for(x=0;x<100;x++) {

to something like this:

for(x=-100;x<100;x++) {

Hi GuyClairbois,

Thanks for ur reply.

I tried its not working..

If i kept code like below

for(x=0;x<100;x++) {
            out[x] = x+year+1;
                      
        }

I'm getting up to + 100 years, but i need both +100 and -100 years what i need to do.

my bad.. you need to do a change in 2 places.

The bottom loop is for generating the number

But there'se also a loop for putting the numbers in the picklist.

Also I forgot that my example was for 100 past year instead of future years.

So what we have to do is expanding the number-generating to 100 more entries AND adding 100 more entries to the picklist.

So the code would be like this:

<script src="/js/dojo/0.4.1/dojo.js"></script>
<script src="/soap/ajax/11.1/connection.js" type="text/javascript"></script>
<script type="text/javascript">
dojo.require("dojo.collections.Store");
dojo.require("dojo.charting.Chart");
dojo.require('dojo.json');
var arYears = getYears();
function swapYears(){
	// Contact Birth day
	if(document.getElementById('calYearPicker') != null) {
		var select = document.getElementById('calYearPicker');
		var curValue = select.value; 
		var parentx = select.parentNode;
		parentx.removeChild(select);
		select = document.createElement('select');
		select.size = 1;
		select.id = 'calYearPicker';
		select.name = 'calYearPicker';
		parentx.appendChild(select);
	}
	if(select != null) {
		for(x=0;x<200;x++) {		
			select.options[x] = new Option(arYears[x], arYears[x], false, false);
		}
	}
}
function getYears() {
	sforce.sessionId = getCookie('sid');
	sforce.connection.sessionId=sforce.sessionId;
	var out = [];
	// generate dates for the last 100 years
	var currentTime = new Date()
	var year = currentTime.getFullYear()
	try {
		for(x=0;x<200;x++) {
			out[x] = x+year-99;
		}	
				
	} catch(error) {
		alert(error);		
	}	
	return out;
}
dojo.addOnLoad(swapYears);
</script>

 I didn't test this but you could check for any javascript errors by using 'Inspect Element' or any functionality alike..