column's cell value split and match the result....

column's cell value split and match the result....

$(
'#<%=GridView1.UniqueID%> td:nth-child(5):contains(08)' ).closest( "tr" ).hide();
 
I need to split the string of the fifth column cell in order to get the hour value, and those cell which match the 08 o' clock will hide.
the cell value is '3/22/2010  08:00' , '3/22/2010  07:00', '3/22/2010  18:00' and so on....
 
what I've had tried is
$(
'#<%=GridView1.UniqueID%> (td:nth-child(5).split(" ")[1]).split(":")[0]):contains("08")'.closest("tr").hide();
 
but is not able to get the result I need.........
Please Help, this forum seems like nobody here, ask question no one willing to reply.