WCF supports by Inernet Explorer

Hi,

I listen from some one WCF runs properly only Inernet Explorer instead of FireFox, Chrome & opera .....

Please conform

Furthermore i notice that some tags values not load in firefox and chrome while internet explorer show xml correctly

<Employee xmlns="www.soap-enveloper.com">

The "xmlns="www.soap-enveloper.com" not show in firefox and chrome, but perfectly on Internet Explorer

Thank you