//$Id: common.js,v 1.9 2005/03/09 11:17:41 deonh Exp $
// Used to manipilate the status message at the bottom of a browser
function MM_displayStatusMsg(msgStr) { //v1.0
  status=msgStr;
  document.MM_returnValue = true;
}

// REDIRECTS TO NEW BROWSER WINDOW
function MM_goToURL() { //v3.0
  var i, args=MM_goToURL.arguments; document.MM_returnValue = false;
  for (i=0; i<(args.length-1); i+=2) eval(args[i]+".location='"+args[i+1]+"'");
}

// OPENS BROWSER WINDOW
function openWindow(theURL,winName,features) {
  window.open(theURL,winName,features);
}

function MM_setTextOfTextfield(objName,x,newText) { //v3.0
  var obj = MM_findObj(objName); if (obj) obj.value = newText;
}

function populate_if_empty(field, txt) {
	if(!document.getElementById(field).value) {
		document.getElementById(field).value = txt;
	}
}

// TOOLTIP SCRIPT
function toolTip(msg, fg, bg)
{
  if(toolTip.arguments.length < 1) // hide
  {
    if(ns4) toolTipSTYLE.visibility = "hidden";
    else toolTipSTYLE.display = "none";
  }
  else // show
  {
    if(!fg) fg = "#777777";
    if(!bg) bg = "#FFFFFF";
    var content =
    '<table border="0" cellspacing="0" cellpadding="1" bgcolor="' + fg + '"><td>' +
    '<table border="0" cellspacing="0" cellpadding="1" bgcolor="' + bg + 
    '"><td align="center"><font face="sans-serif" color="' + fg +
    '" size="-2">&nbsp\;' + msg +
    '&nbsp\;</font></td></table></td></table>';
    if(ns4)
    {
      toolTipSTYLE.document.write(content);
      toolTipSTYLE.document.close();
      toolTipSTYLE.visibility = "visible";
    }
    if(ns6)
    {
      document.getElementById("toolTipLayer").innerHTML = content;
      toolTipSTYLE.display='block'
    }
    if(ie4)
    {
      document.all("toolTipLayer").innerHTML=content;
      toolTipSTYLE.display='block'
    }
  }
}

// used to load pages into frames
function loadmenucontent(url) {
	parent.frames[1].location.href= url;
}

function openWindow(theURL,winName,features) {
  window.open(theURL,winName,features);
}

function isNotaNumber(inputString){
	if(isNaN(inputString.value)) { alert("Only numbers are allowed"); }
}

function minLength(inputString,minLength,maxlenght,numeric,alpha)
{
  if(inputString.length < minLength) { alert(minLength + " or More caracters"); }
  if(inputString.length > maxlenght) { alert(maxlenght + " or Less caracters"); }
} 

////////////////////////
// STYLESHEET CONTROL //
////////////////////////
function setActiveStyleSheet(title) {
  var i, a, main;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
      a.disabled = true;
      if(a.getAttribute("title") == title) a.disabled = false;
    }
  }
}

function getActiveStyleSheet() {
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title") && !a.disabled) return a.getAttribute("title");
  }
  return null;
}

function getPreferredStyleSheet() {
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1
       && a.getAttribute("rel").indexOf("alt") == -1
       && a.getAttribute("title")
       ) return a.getAttribute("title");
  }
  return null;
}

// Example:
// writeCookie("myCookie", "my name", 24);
function writeCookie(name, value, hours)
{
  var expire = "";
  if(hours != null)
  {
    expire = new Date((new Date()).getTime() + hours * 3600000);
    expire = "; expires=" + expire.toGMTString();
  }
  document.cookie = name + "=" + escape(value) + expire;
}

// Example:
// alert( readCookie("myCookie") );
function readCookie(name)
{
  var cookieValue = "";
  var search = name + "=";
  if(document.cookie.length > 0)
  {
    offset = document.cookie.indexOf(search);
    if (offset != -1)
    {
      offset += search.length;
      end = document.cookie.indexOf(";", offset);
      if (end == -1) end = document.cookie.length;
      cookieValue = unescape(document.cookie.substring(offset, end))
    }
  }
  return cookieValue;
}

function redirect(URLStr) {
        location = URLStr;
}

//////////////////////
//MENU BAR FUNCTIONS//
//////////////////////
function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
	var i,j=0,x,a=MM_swapImage.arguments;
	document.MM_sr=new Array;
	for(i=0;i<(a.length-2);i+=3)
	if ((x=MM_findObj(a[i]))!=null){
	  	document.MM_sr[j++]=x;
		if(!x.oSrc)
			x.oSrc=x.src;
			x.src=a[i+2];
	}
}
function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function setBackgroundImage (id, imageURL) {
  if (document.layers) {
  	 //alert(document[id].background.src);
     document[id].background.src = imageURL == 'none' ? null : imageURL;
  }  else if (document.all) {
	//alert(document.all[id].style.backgroundImage);
    document.all[id].style.backgroundImage = imageURL == 'none' ? 'none' : 'url(' + imageURL + ')';
  }  else if (document.getElementById) {
  	//alert(document.getElementById(id).style.backgroundImage);
    document.getElementById(id).style.backgroundImage = imageURL == 'none' ? 'none' : 'url(' + imageURL + ')';
  }
}

function MM_setTextOfLayer(objName,x,newText) { //v4.01
  if ((obj=MM_findObj(objName))!=null) with (obj)
	var content = unescape(newText);
    if (document.layers) {
		document.write(content);
		document.close();
	}
    if(document.getElementById) {
		document.getElementById(objName).innerHTML = content;
	}
    if(document.all) {
		document.all(objName).innerHTML=content;
	}
}

function MM_changeProp(objName,x,theProp,theValue) { //v6.0
  var obj = MM_findObj(objName);
  if (obj && (theProp.indexOf("style.")==-1 || obj.style)){
    if (theValue == true || theValue == false)
      eval("obj."+theProp+"='"+theValue+"'");
    else eval("obj."+theProp+"='"+theValue+"'");
  }
}
function tmt_findObj(n){
        var x,t; if((n.indexOf("?"))>0&&parent.frames.length){t=n.split("?");
        x=eval("parent.frames['"+t[1]+"'].document.getElementById('"+t[0]+"')");
        }else{x=document.getElementById(n)}return x;
}

function MM_showHideLayers() { //v3.0A Modified by Al Sparber and Massimo Foti for NN6 Compatibility
  var i,p,v,obj,args=MM_showHideLayers.arguments;if(document.getElementById){
   for (i=0; i<(args.length-2); i+=3){ obj=tmt_findObj(args[i]);v=args[i+2];
   v=(v=='show')?'visible':(v='hide')?'hidden':v;
   if(obj)obj.style.visibility=v;}} else{
  for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v='hide')?'hidden':v; }
    obj.visibility=v; }}
}


function makeapassword(passwordlength, password_field) {
	var specialsokay =  "no";
	var pwdchars = new Array();
	pwdchars[0] = new Array("a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z");
	pwdchars[1] = new Array("A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V","W","X","Y","Z");
	pwdchars[2] = new Array("0","1","2","3","4","5","6","7","8","9");
	
	var rannum1;
	var rannum2;
	var rannum3;
	var pickelem;
	var loopcounter;
	var passwordelement;
	var finalpassword = "";
	var passwordarray = new Array();
	for (loopcounter = 0; loopcounter < passwordlength; loopcounter++) {
		do {
			rannum1 = Math.floor(Math.random() * pwdchars.length);
			if ((loopcounter == 0) && (specialsokay == "yes")) {
				rannum1=Math.floor(Math.random() * (pwdchars.length - 1))
			}
			pickelem = Math.floor(Math.random() * pwdchars[rannum1].length)
			passwordelement = pwdchars[rannum1][pickelem];
		} while ((rannum1 == rannum2) && (rannum1 == rannum3))
		finalpassword = finalpassword + passwordelement;
		rannum3 = rannum2;
		rannum2 = rannum1;
		if (rannum1 == 3) {
			rannum3 = rannum2;
		}
	}
	var formElements =document.forms[0].elements;
	for (i=0; i<formElements.length; i++) {
		if(formElements[i].name==password_field) {
			formElements[i].value = finalpassword;
		}
	}
}



///////////////////////////
//EMAIL ADDRESS VALIDATOR//
///////////////////////////
function isValidEmail(email, required) {
    if (required==undefined) {   // if not specified, assume it's required
        required=true;
    }
    if (email==null) {
        if (required) {
            return false;
        }
        return true;
    }
    if (email.length==0) {  
        if (required) {
            return false;
        }
        return true;
    }
    if (! allValidChars(email)) {  // check to make sure all characters are valid
        return false;
    }
    if (email.indexOf("@") < 1) { //  must contain @, and it must not be the first character
        return false;
    } else if (email.lastIndexOf(".") <= email.indexOf("@")) {  // last dot must be after the @
        return false;
    } else if (email.indexOf("@") == email.length) {  // @ must not be the last character
        return false;
    }
	
    return true;
}

function allValidChars(email) {
  var parsed = true;
  var validchars = "abcdefghijklmnopqrstuvwxyz0123456789@.-";
  for (var i=0; i < email.length; i++) {
    var letter = email.charAt(i).toLowerCase();
    if (validchars.indexOf(letter) != -1)
      continue;
    parsed = false;
    break;
  }
  return parsed;
}