Problem when accessing Data from url using javascript

Can any one please help me get the data of given variables. I have seen many codes on Stack overflow and MSDN page but I could not frame a logic on my own. It's my lack of knowledge.

Any help would be great!!!

I have a URL as below

http://crm/<server name>/WebResources/abaxis_popup?Data=recordid%3dElectrolyte%26sometext%3daw_device%26somemoretext%3dpolyclinic

I have variables and data as follows

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var addParams =encodeURIComponent( "recordid=" + entityLabel + "&sometext=" + entityName + "&somemoretext=" +entityId);
Xrm.Utility.openWebResource('abaxis_popup',addParams ,280,200);

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recordId=Electrolyte

sometext =aw_device

somemoretext=polyclinic

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