<script>
function showWeekends(s1,s2){
var d1=new Date(s1.replace(/-/g,"/")),d2=new Date(s2.replace(/-/g,"/"))
var sd=d1.getDay(),ln=(d2.getTime()-d1.getTime())/86400000,arr=[];i=0;
if(sd==0)arr[i++]=0;for(j=6-sd;j<ln;j+=7){arr[i++]=j;arr[i++]=j+1;}return(arr);
}
alert(showWeekends("2002-6-1","2003-1-1"))
</script>