// Enumeration for most popular browser types
var BrowserAgents = {IE6:0, IE7:1, IE7plus:2, IE:3, Firefox:4, Opera:5, Other:6};

// This function returns the user's browser type
function GetBrowserAgent()
{ 
    if (navigator.userAgent.indexOf("MSIE") >= 0)
    {
        // If Internet Explorer then check the version
        var sVer = navigator.userAgent;
        sVer = sVer.substring(sVer.indexOf("MSIE") + 5, sVer.indexOf("MSIE") + 6);
        sVer = new Number(sVer);
        if (sVer < 6)
        {
            return BrowserAgents.IE;
        }
        else if (sVer == 6)
        {
            return BrowserAgents.IE6;
        }
        else if (sVer == 7)
        {
            return BrowserAgents.IE7;
        }
        else
        {
            return BrowserAgents.IE7plus;
        }        
    }
    else if (navigator.userAgent.indexOf("Firefox"))
    {
        return BrowserAgents.Firefox;
    }
    else if (navigator.userAgent.indexOf("Opera"))
    {
        return BrowserAgents.Opera;
    }
    else
    {
        return BrowserTypes.Other;
    }
}

//Hides and shows elements
 function hide_show(hide_element, show_element)
{
    if(document.getElementById(hide_element) != null)
        document.getElementById(hide_element).style.display = "none";
    if(document.getElementById(show_element) != null)
        document.getElementById(show_element).style.display = "";
}  

function LoadStyle(a_id)
 {
     if(Cookie.read('HideSearchFilters') == 'true')
     {
        hide_show(a_id, 'spanShowElement');
     }
     else
     {
        hide_show('spanShowElement', a_id);
     }
 }
 function Write(value)
 {
     Cookie.write('HideSearchFilters', value, {duration: 1});
 }
 
 //Checks the radio button passed as parameter
 function CheckRadioButton(rButton)
 {
    document.getElementById(rButton).checked = true;
 }
 
 //hides or shows the sender and changes the arrow of the image. We use this function for the filters --> ucSearchFilters.ascx
 function hideOrShow(sender)
    {   
        var node = sender;   //gets the sender  
        
        do
        {
            node = node.nextSibling; //search all other nodes that are under the sender (not child nodes)
        }while(node.className != 'pnlFilters'); //this is our node that we are looking for - the panel that holds the gridView
        
        var elemToHideShow = node.id; //the ID of the element to hide or show
        
        node = sender.childNodes[0]; //sets the node as the first child node of the sender
        while(node.className != 'imgArrow') //looks through all child nodes of the sender to find the image that we must change
        {
            node = node.nextSibling;
        }
        
        var imageToChangeID = node.id; //the id of the image to change
        
        if(document.getElementById(elemToHideShow).style.display == "none")
        {
            document.getElementById(elemToHideShow).style.display = "inline";
            document.getElementById(imageToChangeID).src = "Images/arrow-down.gif";
        }
        else
        {
            document.getElementById(elemToHideShow).style.display = "none";
            document.getElementById(imageToChangeID).src = "Images/arrow-up.gif";
        }
    }
    
/*hides or shows panel*/    
function hideShowPanel_LoadStyle(panel)
{
    if(document.getElementById(panel).style.display == "none")
    {
        document.getElementById(panel).style.display = "";
    }
    else
    {
        document.getElementById(panel).style.display = "none";
    }
}  
/*changes the control CssClass between the two classes, passed as parameter*/
function changeCssClass(controlID, firstCssClass, secondCssClass)
{
    if(document.getElementById(controlID).className == firstCssClass)
    {
        document.getElementById(controlID).className = secondCssClass;
    }
    else
    {
        document.getElementById(controlID).className = firstCssClass;
    }
}

function validateEmail(e, textBoxToValidate, errorLabel) 
{
   var reg = /^([A-Za-z0-9_\-\.\+])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
   var address = document.getElementById(textBoxToValidate).value;
   if(reg.test(address) == false) 
   {
        document.getElementById(errorLabel).className = "nothidden"
        if(window.event)
        {
            e.returnValue = false;
        }
        else
        {
            e.preventDefault();
        }
   }
   else
   {
      document.getElementById(errorLabel).className = "hidden";
   }
}

/*Shroud an email address in a spam secure way - http://support.website-creator.org/avoid_spam.html*/
function writeEmail(username, hostname)
{
    var linktext = username + "@" + hostname ;
    document.write("<a href='" + "mail" + "to:" + username + "@" + hostname + "'>" + linktext + "</a>");
}

/*sets current day, month or year on onfocus event*/
function onFocusSet(dmy, control)
{
    var d = new Date();
    if(dmy == 'day')
    {
        if (control.value == (d.getDate() + 1)) {control.value = '';}
    }
    else if(dmy == 'month')
    {
        if (control.value == (d.getMonth() + 1)) {control.value = '';}
    }
    else if(dmy == 'year')
    {
        if (control.value == d.getFullYear()) {control.value = '';}
    }
}
/*sets current day, month or year on onBlur event*/
function onBlurSet(dmy, control)
{
    var d = new Date();
    if(dmy == 'day')
    {
        if (control.value == '') {control.value = (d.getDate() + 1);}
    }
    else if(dmy == 'month')
    {
        if (control.value == '') {control.value = (d.getMonth() + 1);}
    }
    else if(dmy == 'year')
    {
       if (control.value == '') {control.value = d.getFullYear();}
    }
}


/*hides the specified control, passed by it's ID */
function hideControl(a_oControlID)
{
    var obj = document.getElementById(a_oControlID);
    obj.style.display = "none";
}