var errorstatus = true;
var thename=document.getElementById("name").value;
var theage=document.getElementById("age").value;
if (thename=="") {
errorstatus=false;
}
if (theage=="") {
errorstatus=false;
}
if (errorstatus==false) {
'Add your alert message here
'return false somehow
}
else
{
'return true somehow
}