Hi Ankur, 

I have further requirement like if i select user it should create approval in approver related list and if group is selected it should add approval in group approval related list  i added below code could you please help me on this too :

This seems to be not working 

response.sendRedirect( "/" + table_id + ".do?sys_id=" + document_id);
test();
function test()
{

if(quick_message_dropdown == 'user')
{
var gr = new GlideRecord('sysapproval_approver');
gr.initialize();
gr.source_table = table_id;
gr.document_id = document_id;
gr.state= 'requested';
gr.sysapproval = document_id;
gr.approver = user; //user
gr.insert();
gs.addInfoMessage("User added in approver list " );
}
else if(quick_message_dropdown == 'group')
{
var group1 = new GlideRecord('sysapproval_group');
group1.initialize();
group1.assignment_group = group;
group1.approval = 'requested';
group1.parent = document_id;
group1.insert();
gs.addInfoMessage("Group added in approver list " );
action.setRedirectURL(current);
}