Jquery Yes or No confirmation from a class

Question

In my previous question regarding the script in class this was extension I am creating a Yes/No confirm here I need to execute the code written in a function when user clicks on Yes

protected void btnclick(object sender,Eventargs e)

{

     // Here my class with Yes/No script will be called based on the condition, after user select Yes I need to execute my code

}

My script in a class file

StringBuilder strScript = new StringBuilder();

strScript.Append("<script type=\"text/javascript\" src=\"").Append("Scripts/jquery-1.4.1.js").Append("\"></script>");

strScript.Append("<script type=\"text/javascript\" src=\"").Append("Scripts/jquery.msgBox.js").Append("\"></script>");

strScript.Append("<link rel=\"stylesheet\" type=\"text/css\" href=\"").Append("CSS/msgBoxLight.css").Append("\" />");

strScript.Append("<script type=\"text/javascript\">");

strScript.Append("(function example()");

strScript.Append("{");

strScript.Append("$.msgBox({");

strScript.Append("title:'Are You Sure'");

strScript.Append(",");

strScript.Append("content:'Would you like a cup of cofee?'");

strScript.Append(",");

strScript.Append("type:'confirm'");

strScript.Append(",");

strScript.Append("buttons:[{value:'Yes'},{value:'No'}]");

strScript.Append(",");

strScript.Append("success:function(result){");

strScript.Append("if(result=='Yes')");

strScript.Append("{");

strScript.Append("alert('One cup of coffee coming right up!')"); // Here Instead of alert I need to pass a value to form something like true or false

strScript.Append("}");

strScript.Append("}");

strScript.Append("});");

strScript.Append("})();");

strScript.Append("</script>");

Can some one help me.