Problem using function with Ajax

I have written the function which retrieve the data using xml http response. the problem is when i pass the function only once then it runs but when i run it for more than once with different parameters only the first one runs.

here is the function i written in javascript using xml http response object.
xmlhttpPost(strURL,t,FrmName,FldName,FieldChange,FieldChangeType)

i have passed the above function with different parameters one below the other.

Should i pass the above function with different parameters after some span of interval.

what may be problem. Can any guy help me.

Jayant Patil
India

Are you certain the parameters are actually being updated?

I had checked these function individually with different parameters, and it is running fine, but question is that how it gets problem only after defining these function one below the other.

Jayant