function detectBrowser(){this.supportLayer=false;this.supportDOM=false;this.supportAll=false;this.isGecko=false;this.isOpera=false;this.isOpera5=false;this.isOpera6=false;this.isIE=false;this.isIE4=false;if(document.layers){this.supportLayer=true;}
if(document.getElementById){this.supportDOM=true;}
if(document.all){this.supportAll=true;}
if((navigator.userAgent).indexOf("Gecko")!=-1){this.isGecko=true;}
else if((navigator.userAgent).indexOf("Opera")!=-1){this.isOpera=true;if((navigator.userAgent).indexOf("Opera 5")!=-1)this.isOpera5=true;else if((navigator.userAgent).indexOf("Opera/5")!=-1)this.isOpera5=true;if((navigator.userAgent).indexOf("Opera 6")!=-1)this.isOpera6=true;else if((navigator.userAgent).indexOf("Opera/6")!=-1)this.isOpera6=true;}
else if((navigator.userAgent).indexOf("IE")!=-1){this.isIE=true;if((navigator.userAgent).indexOf("MSIE 4")!=-1){this.isIE4=true;}}}
var browser=new detectBrowser();