Closed Issue: Script Blocking In safari [18987]

In Safari the link button is not working in the following Scenario. If the modal up is showed through link button, the following exception is occured in safari

Sys.ArgumentTypeException: Sys.ArgumentTypeException: Object of type 'String' cannot be converted to type 'Function'.
Comments: This ticket was filed for a pre-15.1 version of AJAX Control Toolkit. If this is still an issue in v15.1 or later, please create a new inquiry.