function validdate(f,e)
{	
month=document.forms[f].elements[e].value
year=new Date().getYear()

if(month!=""&&month!=0)
{document.forms[f].elements[e-1].disabled=false}
else{return false}

if((month==01)||(month==03)||(month==05)||(month==07)||(month==08)||(month==10)||(month==12))
{
day=31;
}
if((month==04)||(month==06)||(month==09)||(month==11))
{
day=30;
}
if(month==2)
{
	if (year%4==0){
	day=29;}
	else{
	day=28;}
}
document.forms[f].elements[e-1].disabled=false
document.forms[f].elements[e-1].length=day+1
for(i=1;i<=day;i++)
{
document.forms[f].elements[e-1].options[i].value=i
document.forms[f].elements[e-1].options[i].text=i
}}