Here iam escaping all special characters even then iam getting the error..

Actual Code:
<script language=\"Javascript1.2\">\ndocument.oncontextmenu=function\\(\\)\\\n{\nreturn false\\}if\\(document.layers\\)\n\\{\nwindow.captureEvents\\(Event.MOUSEDOWN\\);\nwindow.onmousedown=function\\(e\\)\n\\{\nif\\(e.target==document\\)return false;\n\\}\n\\}\nelse\\{document.onmousedown=function\\(\\)\\{return false\\}\\}</script></head>

Error:

java.util.regex.PatternSyntaxException: Illegal repetition near index 70
<script language="Javascript1.2">
document.oncontextmenu=function\(\)\
{ return false\}
if\(document.layers\)
\{
window.captureEvents\(Event.MOUSEDOWN\);
window.onmousedown=function\(e\)
\{ if\(e.target==document\)return false; \} \}
else
\{document.onmousedown=function\(\)\{return false\}\}</script></head>
^
java.util.regex.Pattern.error(Unknown Source)
java.util.regex.Pattern.closure(Unknown Source)
java.util.regex.Pattern.sequence(Unknown Source)
java.util.regex.Pattern.expr(Unknown Source)
java.util.regex.Pattern.compile(Unknown Source)
java.util.regex.Pattern.<init>(Unknown Source)
java.util.regex.Pattern.compile(Unknown Source)
java.lang.String.replaceFirst(Unknown Source)
org.apache.jsp.tools.ResolveCopyPasteIssue1_jsp.create(ResolveCopyPasteIssue1_jsp.java:259) org.apache.jsp.tools.ResolveCopyPasteIssue1_jsp._jspService(ResolveCopyPasteIssue1_jsp.java:518)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:369)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:322)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:249) javax.servlet.http.HttpServlet.service(HttpServlet.java:717) org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)

How to resolve this error