String.prototype.trim = trim;
var ns4 = (document.layers)? true:false
var ie4 = (document.all)? true:false		//This doesn't test for ie5+
var iwp = null
var ewp = null
var helpp = null
var legalp = null
//var is = new Is();	//Refer to Is() - should use test for ie3mac if worried about old browsers.
function PopLegal(Page)  {
	//alert("ie4="+ie4+" is.ie4up="+is.ie4up)
	if (legalp != null){
		var is = new Is();
		if(is.ie4up) legalp.close()
		legalp = null
		}
	legalp = window.open("/Legal/"+Page,"Legal","scrollbars=yes,width=500,height=600")
	}
function isEmpty(str)  {
	if( str == null || str == "" )
		return true
	return false
	}
// Ex: checkIt("Zipcode", document.Register.Zipcode, 5, 10, false)
function checkIt(what,where,minlen,maxlen,notify)  {
	tmp = where.value
	if( isEmpty(tmp) || tmp.length < minlen || tmp.length > maxlen )  {
		if( notify ) alert("Invalid " + what + ".  Value must be between " + minlen + " and " + maxlen + " characters in length.")
		where.focus()
		where.select()
		return true
		}
	return false
	}
function checkItSimple(what,where,minlen,maxlen,notify)  {
	tmp = where.value
	if( isEmpty(tmp) || tmp.length < minlen || tmp.length > maxlen )  {
		return true
		}
	return false
	}
function CheckEmail(x)  {
	if( x.value.indexOf("@") > 0 && x.value.indexOf(".") > 0)  {
		return true;
		}
	alert("Invalid Email Address")
	x.focus()
	return false
	}
function CloseAndRefresh()  {
	self.opener.history.go(0)
	window.close()
	}
function layerWrite(id,nestref,text) {
	ns4 = (document.layers)? true:false
	ie4 = (document.all)? true:false
	alert("a")
	if (ns4) {
	alert("b")
		var lyr = (nestref)? eval('document.'+nestref+'.document.'+id+'.document') : document.layers[id].document
	alert("c")
		lyr.open()
	alert("d")
		lyr.write(text)
	alert("e")
		lyr.close()
	}
	else if (ie4) {
		alert(text + ", " + id)
		document.all[id].innerHTML = text
		}
}
function CheckLogin()  {
	
		alert("You must be registered/logged in to add favorites to your account.  Registration" 
			+ " is free, simply click the Register or Sign Up link to get started.")
		return false
	
	}
function trim() {
    //Match spaces at beginning and end of text and replace with empty strings. Use is text.trim()
    return this.replace(/^\s+/,'').replace(/\s+$/,'');
    }

function verifyAlphaNumeric(txt,exceptions)  {
	for(var j=0; j < txt.length; j++)  {
		var ch = txt.charAt(j);
		var nr = txt.charCodeAt(j)
		if( !((nr>47 && ch < nr) || (nr>64 && nr<91) || (nr>96 && nr<123) || (exceptions.indexOf(ch)>=0)) ) {
			return(false)
			}
		}
	return true;
	}
function verifyNumeric(txt)  {
	for(var j=0; j < txt.length; j++)  {
		var ch = txt.charAt(j);
		var nr = txt.charCodeAt(j)
		if( !(nr>47 && nr<58) ) {
			return(false)
			}
		}
	return true;
	}
function verifyNumericEx(txt,exceptions)  {
	for(var j=0; j < txt.length; j++)  {
		var ch = txt.charAt(j);
		var nr = txt.charCodeAt(j)
		if( !(nr>47 && nr<58 || (exceptions.indexOf(ch)>=0)) ) {
			return(false)
			}
		}
	return true;
	}
/* function verifyNoSpace(txt)  {
	for(var j=0; j < txt.length; j++)  {
		alert("["+txt.charAt(j)+"]")
		if( txt.charAt(j) == " " )  {
			return(false);
			}
		}
	return true;
	} */
function Is ()
{   // http://www.mozilla.org/docs/web-developer/sniffer/browser_type_oo.html
	// convert all characters to lowercase to simplify testing
    var agt=navigator.userAgent.toLowerCase();

    // *** BROWSER VERSION ***
    // Note: On IE5, these return 4, so use is.ie5up to detect IE5.

    this.major = parseInt(navigator.appVersion);
    this.minor = parseFloat(navigator.appVersion);

    // Note: Opera and WebTV spoof Navigator.  We do strict client detection.
    // If you want to allow spoofing, take out the tests for opera and webtv.
    this.nav  = ((agt.indexOf('mozilla')!=-1) && (agt.indexOf('spoofer')==-1)
                && (agt.indexOf('compatible') == -1) && (agt.indexOf('opera')==-1)
                && (agt.indexOf('webtv')==-1) && (agt.indexOf('hotjava')==-1));
    this.nav2 = (this.nav && (this.major == 2));
    this.nav3 = (this.nav && (this.major == 3));
    this.nav4 = (this.nav && (this.major == 4));
    this.nav4up = (this.nav && (this.major >= 4));
    this.navonly      = (this.nav && ((agt.indexOf(";nav") != -1) ||
                          (agt.indexOf("; nav") != -1)) );
    this.nav6 = (this.nav && (this.major == 5));
    this.nav6up = (this.nav && (this.major >= 5));
    this.gecko = (agt.indexOf('gecko') != -1);


    this.ie     = ((agt.indexOf("msie") != -1) && (agt.indexOf("opera") == -1));
    this.ie3    = (this.ie && (this.major < 4));
    this.ie4    = (this.ie && (this.major == 4) && (agt.indexOf("msie 4")!=-1) );
    this.ie4up  = (this.ie  && (this.major >= 4));
    this.ie5    = (this.ie && (this.major == 4) && (agt.indexOf("msie 5.0")!=-1) );
    this.ie5_5  = (this.ie && (this.major == 4) && (agt.indexOf("msie 5.5") !=-1));
    this.ie5up  = (this.ie  && !this.ie3 && !this.ie4);
    this.ie5_5up =(this.ie && !this.ie3 && !this.ie4 && !this.ie5);
    this.ie6    = (this.ie && (this.major == 4) && (agt.indexOf("msie 6.")!=-1) );
    this.ie6up  = (this.ie  && !this.ie3 && !this.ie4 && !this.ie5 && !this.ie5_5);

    // KNOWN BUG: On AOL4, returns false if IE3 is embedded browser
    // or if this is the first browser window opened.  Thus the
    // variables is.aol, is.aol3, and is.aol4 aren't 100% reliable.
    this.aol   = (agt.indexOf("aol") != -1);
    this.aol3  = (this.aol && this.ie3);
    this.aol4  = (this.aol && this.ie4);
    this.aol5  = (agt.indexOf("aol 5") != -1);
    this.aol6  = (agt.indexOf("aol 6") != -1);

    this.opera = (agt.indexOf("opera") != -1);
    this.opera2 = (agt.indexOf("opera 2") != -1 || agt.indexOf("opera/2") != -1);
    this.opera3 = (agt.indexOf("opera 3") != -1 || agt.indexOf("opera/3") != -1);
    this.opera4 = (agt.indexOf("opera 4") != -1 || agt.indexOf("opera/4") != -1);
    this.opera5 = (agt.indexOf("opera 5") != -1 || agt.indexOf("opera/5") != -1);
    this.opera5up = (this.opera && !this.opera2 && !this.opera3 && !this.opera4);

    this.webtv = (agt.indexOf("webtv") != -1); 

    this.TVNavigator = ((agt.indexOf("navio") != -1) || (agt.indexOf("navio_aoltv") != -1)); 
    this.AOLTV = this.TVNavigator;

    this.hotjava = (agt.indexOf("hotjava") != -1);
    this.hotjava3 = (this.hotjava && (this.major == 3));
    this.hotjava3up = (this.hotjava && (this.major >= 3));

    // *** JAVASCRIPT VERSION CHECK ***
    if (this.nav2 || this.ie3) this.js = 1.0;
    else if (this.nav3) this.js = 1.1;
    else if (this.opera5up) this.js = 1.3;
    else if (this.opera) this.js = 1.1;
    else if ((this.nav4 && (this.minor <= 4.05)) || this.ie4) this.js = 1.2;
    else if ((this.nav4 && (this.minor > 4.05)) || this.ie5) this.js = 1.3;
    else if (this.hotjava3up) this.js = 1.4;
    else if (this.nav6 || this.gecko) this.js = 1.5;
    // NOTE: In the future, update this code when newer versions of JS
    // are released. For now, we try to provide some upward compatibility
    // so that future versions of Nav and IE will show they are at
    // *least* JS 1.x capable. Always check for JS version compatibility
    // with > or >=.
    else if (this.nav6up) this.js = 1.5;
    // note ie5up on mac is 1.4
    else if (this.ie5up) this.js = 1.3

    // HACK: no idea for other browsers; always check for JS version with > or >=
    else this.js = 0.0;

    // *** PLATFORM ***
    this.win   = ( (agt.indexOf("win")!=-1) || (agt.indexOf("16bit")!=-1) );
    // NOTE: On Opera 3.0, the userAgent string includes "Windows 95/NT4" on all
    //        Win32, so you can't distinguish between Win95 and WinNT.
    this.win95 = ((agt.indexOf("win95")!=-1) || (agt.indexOf("windows 95")!=-1));

    // is this a 16 bit compiled version?
    this.win16 = ((agt.indexOf("win16")!=-1) || 
               (agt.indexOf("16bit")!=-1) || (agt.indexOf("windows 3.1")!=-1) || 
               (agt.indexOf("windows 16-bit")!=-1) );  

    this.win31 = ((agt.indexOf("windows 3.1")!=-1) || (agt.indexOf("win16")!=-1) ||
                    (agt.indexOf("windows 16-bit")!=-1));

    // NOTE: Reliable detection of Win98 may not be possible. It appears that:
    //       - On Nav 4.x and before you'll get plain "Windows" in userAgent.
    //       - On Mercury client, the 32-bit version will return "Win98", but
    //         the 16-bit version running on Win98 will still return "Win95".
    this.win98 = ((agt.indexOf("win98")!=-1) || (agt.indexOf("windows 98")!=-1));
    this.winnt = ((agt.indexOf("winnt")!=-1) || (agt.indexOf("windows nt")!=-1));
    this.win32 = (this.win95 || this.winnt || this.win98 || 
                    ((this.major >= 4) && (navigator.platform == "Win32")) ||
                    (agt.indexOf("win32")!=-1) || (agt.indexOf("32bit")!=-1));

    this.winme = ((agt.indexOf("win 9x 4.90")!=-1));
    this.win2k = ((agt.indexOf("windows nt 5.0")!=-1));

    this.os2   = ((agt.indexOf("os/2")!=-1) || 
                    (navigator.appVersion.indexOf("OS/2")!=-1) ||   
                    (agt.indexOf("ibm-webexplorer")!=-1));

    this.mac    = (agt.indexOf("mac")!=-1);
    // hack ie5 js version for mac
    if (this.mac && this.ie5up) this.js = 1.4;
    this.mac68k = (this.mac && ((agt.indexOf("68k")!=-1) || 
                               (agt.indexOf("68000")!=-1)));
    this.macppc = (this.mac && ((agt.indexOf("ppc")!=-1) || 
                                (agt.indexOf("powerpc")!=-1)));

    this.sun   = (agt.indexOf("sunos")!=-1);
    this.sun4  = (agt.indexOf("sunos 4")!=-1);
    this.sun5  = (agt.indexOf("sunos 5")!=-1);
    this.suni86= (this.sun && (agt.indexOf("i86")!=-1));
    this.irix  = (agt.indexOf("irix") !=-1);    // SGI
    this.irix5 = (agt.indexOf("irix 5") !=-1);
    this.irix6 = ((agt.indexOf("irix 6") !=-1) || (agt.indexOf("irix6") !=-1));
    this.hpux  = (agt.indexOf("hp-ux")!=-1);
    this.hpux9 = (this.hpux && (agt.indexOf("09.")!=-1));
    this.hpux10= (this.hpux && (agt.indexOf("10.")!=-1));
    this.aix   = (agt.indexOf("aix") !=-1);      // IBM
    this.aix1  = (agt.indexOf("aix 1") !=-1);    
    this.aix2  = (agt.indexOf("aix 2") !=-1);    
    this.aix3  = (agt.indexOf("aix 3") !=-1);    
    this.aix4  = (agt.indexOf("aix 4") !=-1);    
    this.linux = (agt.indexOf("inux")!=-1);
    this.sco   = (agt.indexOf("sco")!=-1) || (agt.indexOf("unix_sv")!=-1);
    this.unixware = (agt.indexOf("unix_system_v")!=-1); 
    this.mpras    = (agt.indexOf("ncr")!=-1); 
    this.reliant  = (agt.indexOf("reliantunix")!=-1);
    this.dec   = ((agt.indexOf("dec")!=-1) || (agt.indexOf("osf1")!=-1) || 
                  (agt.indexOf("dec_alpha")!=-1) || (agt.indexOf("alphaserver")!=-1) || 
                  (agt.indexOf("ultrix")!=-1) || (agt.indexOf("alphastation")!=-1)); 
    this.sinix = (agt.indexOf("sinix")!=-1);
    this.freebsd = (agt.indexOf("freebsd")!=-1);
    this.bsd = (agt.indexOf("bsd")!=-1);
    this.unix  = ((agt.indexOf("x11")!=-1) || this.sun || this.irix || this.hpux || 
                 this.sco ||this.unixware || this.mpras || this.reliant || 
                 this.dec || this.sinix || this.aix || this.linux || this.bsd || this.freebsd);

    this.vms   = ((agt.indexOf("vax")!=-1) || (agt.indexOf("openvms")!=-1));
}
function stripHTML(){
	var re = /<\S[^><]*>/g
	for (i=0; i < arguments.length; i++)
	arguments[i].value=arguments[i].value.replace(re, "")
	}
function stripNonNumeric(v)  {
	return(v.replace(/[^0-9]/g,""))
	}
function setDisabled(fld,bool)  {
	if( document.all || document.getElementByid ){
		fld.disabled = bool
		}
	}