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With the simple addition of the <PRE> and </PRE> tags:
frame.html:
<FRAMESET COLS="50%,*"> <FRAME SRC="linebreaks.html"> <FRAME SRC="dummy.html" NAME="otherframe"> </FRAMESET>
dummy.html:
<H1>dummy.html</H1>
linebreaks.html:
<SCRIPT LANGUAGE="JavaScript"><!-- function process() { alert(document.myform.mytext.value); parent.otherframe.document.writeln('<PRE>' + document.myform.mytext.value + '<\/PRE>'); } //--></SCRIPT> <FORM NAME="myform"> <TEXTAREA NAME="mytext" COLS="30" ROWS="10"> This is a test. </TEXTAREA> <INPUT TYPE="BUTTON" VALUE="OK" onClick="process()"> </FORM>