How To Pass Cube Values For Directly Accessing Reports From A URL

Hi,

Actually we have multiple Sub Reports which we want to open from the Main Report. Initially when i used "Jump To Report" property it worked fine but in the browser the Main Report used to get refreshed everytime i had to Go Back to Main Report from Sub Report.
Second solution which i want to try is using "Jump To URL" property.
Some Details:
I have multiple parameters in the report.
My parameters are getting data from a Cube.
Parameters can have Multiple Vaue selected at a time.
I want to pass all the values to the URL.

Say
Parameter1 is DimCountryCountry
can have values such as:
[Dim Country].[Country].[All]
[Dim Country].[Country].&[India]
[Dim Country].[Country].&[Germany]
......

Parameter2 is DimCountryState
can have values such as:
[Dim Country].[State].[All]
[Dim Country].[State].&[Delhi]
[Dim Country].[State].[Punjab]
.....

Now i want to create a URL using these values,since each parameter should be separated by "&"(ampersand) my URL looks like one below.
Following URL Works fine:
javascript:void(window.open'(http://MyReportServer/ReportServer/Pages/Report.aspx?/MyReports/Project1/Country+Data&rcarameters=false&DimCountryCountry=[Dim Country].[Country].[All]&DimCountryState=[Dim Country].[State].[All]'))

as long as there is no "&" in the Parameter Value the URL works fine.
But when i try to insert values other than "[All]" it starts failing because "[Dim Country].[Country].&[India]" contains "&", which gives error due to ambiguity, (whether this "&" is a parameter separater or is it a part of parameter value)

So i found a solution for that, which is to replace "&" with "%26" escape sequence characters.This works fine as long as we specify this escape sequence in address bar. i.e if we directly paste the following URL in the address bar it will work.
http://MyReportServer/ReportServer/Pages/Report.aspx?/MyReports/Project1/Country+Data&rcarameters=false&DimCountryCountry=[Dim Country].[Country].%26[India]&DimCountryState=[Dim Country].[State].%26[Delhi]

but if we put this URL in the Javascript, it doesnot work, because the WIndow.Open function automatically replaces the
"%26" characters with "&", which we know gives ambiguity error.

Please let me know if you have any suggesiton for it. Anyway any better solution for my problem.

Thanks
Sumit
www.sumitkhemka.com