function Browser(){
 this.ver=navigator.appVersion
 this.agent=navigator.userAgent
 this.dom=document.getElementById?1:0
 this.opera=this.agent.indexOf("Opera")>-1
 this.ie5=(this.ver.indexOf("MSIE 5")>-1 && this.dom && !this.opera5)?1:0;
 this.ie6=(this.ver.indexOf("MSIE 6")>-1 && this.dom && !this.opera5)?1:0;
 this.ie4=(document.all && !this.dom && !this.opera5)?1:0;
 this.ie=this.ie4||this.ie5||this.ie6
 this.mac=this.agent.indexOf("Mac")>-1
 this.ns6=(this.dom && parseInt(this.ver) >= 5) ?1:0;
 this.ns4=(document.layers && !this.dom)?1:0;
 this.ns=(this.ns6||this.ns4);
 this.bw=(this.ie6||this.ie5||this.ie4||this.ns4||this.ns6||this.opera5)
 return this
}
function isControlKey(iKey){if(iKey==0||iKey==8||iKey==13||iKey==27)return(true);return(false);}
function isNumberKey(iKey){if(iKey>=48&&iKey<=57)return(true);return(false);}
function getKeyPress(e){if(document.all)return(window.event.keyCode);else return(e.which);}
function getSel() {
 var sRst = '';
 if (document.getSelection) {
  sRst = document.getSelection();
 }else if (window.getSelection) {
  sRst = window.getSelection();
 }
 else if (document.selection) {
  sRst = document.selection.createRange();
  sRst = sRst.text;
 }
 return (sRst);
}