Not able to get xml in javascript variable

In my jsp i have written java code which gives me xml in string variable

code: szxml=objLSXML.getXMLString();

and i am assigning that string value to a hidden variable in jsp using scriptlet.

But, when i assign this hidden variable to javascript variable then it does not give me xml.

code: var mrootXML=objDoc.rootXML.value;

If i debug it gives me mrootXML value as "xml version=".(in this output before xml i have less than and question mark characters)

I am doing this on Google chrome(version : 36). Also, i want it to run on other browsers too. Please help i am stuck.