document.writeln('function reportError(msg,url,line){\nline-=14;\nvar str='You have found an error as below: \\n\\n';\nstr+='Err: '+msg+' on line: '+(line);\nalert(str);\nopener.goto(line);\nopener.focus();\nwindow.onerror=null;\nsetTimeout('self.close()',10);\nreturn true;\n}');

code_win.document.writeln('window.onerror = reportError;');

code_win.document.writeln('<\/script>');

code_win.document.writeln(str);

code_win.document.close();

return;

}

function savecode() {

var str = document.getElementById('txt_main').value;

var code_win = window.open('about:blank','_blank','top=10000');

code_win.document.open();

code_win.document.writeln(str);

code_win.document.close();

code_win.document.execCommand('saveas','','code.html');

code_win.close();

return;

}

function goto(ln) {

if(!/^\d+$/.