// Browser detection // 
Internet Explorervar ie  = document.all != null;  //ie4 and abovevar ie5 = document.getElementById && document.all;var ie6 = document.getElementById && document.all&&(navigator.appVersion.indexOf("MSIE 6.")>=0); 
// Netscapevar ns4 = document.layers != null;var ns6 = document.getElementById && !document.all;var ns  = ns4 || ns6; // Firefoxvar ff  = !document.layers && !document.all; 
// Operavar op  = navigator.userAgent.indexOf("opera")>0;var op7 = op && operaVersion() <= 7;var op8 = op && operaVersion() >= 8; 
// Detects the Opera versionfunction operaVersion() {	agent = navigator.userAgent;	idx = agent.indexOf("opera");		if (idx>-1) {		return parseInt(agent.subString(idx+6,idx+7));	}}