function checkBrowser(){ this.ver=navigator.appVersion; this.dom=document.getElementById?1:0; this.op=(navigator.userAgent.indexOf("Opera")!=-1)?1:0
this.moz1=(navigator.userAgent.indexOf("Mozilla")!=-1&&!this.op)?1:0; this.ie4=(document.all && !this.dom && !this.op)?1:0; this.ie=(document.all && !this.op)?1:0
this.ns6=(!this.ie && this.dom && parseInt(this.ver)>= 5)?1:0; this.ns7=(!this.ie && this.dom && parseInt(this.ver)>= 7)?1:0}
var bw = new checkBrowser();