var identstring = navigator.userAgent;
var IE = 0; var NS4 = 0; NS6 = 0; var OP = 0; var MOZ = 0; var KON = 0;

if (identstring.indexOf("Opera",0) != -1){
	OP = 1; }
else if
	(identstring.indexOf("MSIE 6.",0) != -1) {
	IE = 1;}
else if
	(identstring.indexOf("MSIE 5.",0) != -1) {
	IE = 1;}
else if (identstring.indexOf("MSIE 5.",0) == -1 && identstring.indexOf("Mozilla/4.",0) != -1) {
	NS4 = 1; }
else if (identstring.indexOf("MSIE 5.",0) == -1 && identstring.indexOf("Mozilla/5.",0) != -1) {
	NS6 = 1; }
else if (identstring.indexOf("Gecko/",0) != -1) {
	MOZ = 1; }
else if (identstring.indexOf("Konqueror/",0) != -1) {
	KON = 1; }
else {
	NS4 = 1; }