function BrowserCheck()
{
this.agent= navigator.userAgent.toLowerCase();
this.is_ie = (this.agent.indexOf("msie") != -1);
this.is_ie_4 = (is_ie && (this.agent.indexOf("msie 4") != -1));
this.is_ie_5 = (is_ie && (this.agent.indexOf("msie 5.0") != -1));
this.is_ie_5_up = (is_ie && !is_ie_4);
this.is_ie_5_5 = (is_ie && (this.agent.indexOf("msie 5.5") != -1));
this.is_ie_5_5_up = (is_ie && !is_ie_4 && !is_ie_5);
this.is_ie_6 = (is_ie && (this.agent.indexOf("msie 6.0") != -1));
this.is_ie_7 = (is_ie && (this.agent.indexOf("msie 7.0") != -1));
this.is_mozilla = ((this.agent.indexOf("mozilla") != -1) && (this.agent.indexOf("spoofer") == -1) && (this.agent.indexOf("compatible") == -1) && (this.agent.indexOf("opera") == -1) && (this.agent.indexOf("webtv") == -1) && (this.agent.indexOf("hotjava") == -1));
this.is_mozilla_1_3_up = (is_mozilla && (navigator.productSub > 20030210));
this.is_ns_4 = (!is_ie && (this.agent.indexOf("mozilla/4.") != -1));
this.is_rtf = (is_ie_5_5_up || is_mozilla_1_3_up);
this.is_safari = (this.agent.indexOf("safari") != -1);
this.isIE=isIE;
this.isIE6inf=isIE6inf;
}
function isIE()
{
    return this.is_ie;
}
function isIE6inf()
{
    return (this.is_ie_6 || this.is_ie_5_5 || this.is_ie_5 || this.is_ie_4);
}