UniSession.JSCode('name_'+MainForm.UniURLFrame1.name+'_'+MainForm.UniURLFrame1.JSName+'.myinput4.innerHTML="..."');

MainForm.UniURLFrame1.iframe.contentWindow.document.getElementById("中文").innerHTML="...";

MainForm.UniURLFrame1.iframe.contentWindow.fun(,,,);//function

MainForm.UniURLFrame1.iframe.contentWindow.vvv = '';//var vvv