if(!Common)
{
    var Common = {};
}

Common.getFilenameFromURL = function(strValue)
{
    var nFilenameStart = strValue.lastIndexOf("/");
    if(nFilenameStart != -1)
    {
        strValue = strValue.substring(nFilenameStart + 1);
    }
    
    return strValue;   
}

Common.setFormFieldValue = function(strElementID, strValue)
{
    $get(strElementID).value = strValue;
}

Common.getIntegerFromStyleValue = function(strValue)
{
    var nPXIndex = strValue.indexOf("px");
    if(nPXIndex != -1)
    {
        strValue = strValue.substring(0, nPXIndex);
    }
    
    var nValue = parseInt(strValue);
    
    if(!nValue)
    {
        return 0;
    }
    else
    {
        return nValue;
    }
}

Common.getHexFromStyleValue = function(strValue)
{
    var nHashIndex = strValue.indexOf("#");
    if(nHashIndex != -1)
    {
        strValue = strValue.substring(nHashIndex + 1);
    }
    
    var nRGBIndex = strValue.toLowerCase().indexOf("rgb");
    if(nRGBIndex != -1)
    {
        var strRGBValue = strValue.substring(strValue.indexOf("(") + 1, strValue.indexOf(")"));
        var arrRGBValue = strRGBValue.split(", ");
        
        strValue = Common.getHexFromDecimal(arrRGBValue[0], 2)
            + Common.getHexFromDecimal(arrRGBValue[1], 2)
            + Common.getHexFromDecimal(arrRGBValue[2], 2);
    }
    
    return strValue;
}

Common.getHexFromDecimal = function(nValue, nNumberOfHexDigits)
{
    if(!nNumberOfHexDigits)
    {
        nNumberOfHexDigits = nValue.length;
    }
    
    var strValue = parseInt(nValue).toString(16);
    
    while(strValue.length < nNumberOfHexDigits)
    {
        strValue = "0" + strValue;
    }
    
    return strValue;
}

Common.getStyleAttribute = function(elmElement, strCSSStyleName)
{
    var strValue = "";
    
	if(elmElement.currentStyle)
	{
	    var strIEStyleName = "";
	    var bCapitalise = false;
	    
	    var strFinalWord = "";
	    var strFirstWords = "";
	    
	    for(var nIndex = 0; nIndex < strCSSStyleName.length; ++nIndex)
	    {
	        //do this with a split
	        if(strCSSStyleName.charAt(nIndex) == "-")
	        {
	            bCapitalise = true;
	        }
	        else
	        {
	            if(bCapitalise)
	            {
	                strFinalWord = strCSSStyleName.substring(nIndex);
	                strFirstWords = strIEStyleName;
	                
	                strIEStyleName += strCSSStyleName.charAt(nIndex).toUpperCase();
	                
	                bCapitalise = false;
	            }
	            else
	            {
	                strIEStyleName += strCSSStyleName.charAt(nIndex);
	            }
	        }
	    }
	    
		strValue = elmElement.currentStyle[strIEStyleName];
    }
	else if (window.getComputedStyle)
	{
		strValue = document.defaultView.getComputedStyle(elmElement, null).getPropertyValue(strCSSStyleName);
	}
	
	return strValue;
}

Common.clearFileUploadBox = function(elmFileInput)
{
    var elmFileInputCleared;
    
    if(Sys.Browser.agent == Sys.Browser.InternetExplorer)
    {
        elmFileInputCleared = elmFileInput.cloneNode(false);
    }
    else
    {
        elmFileInputCleared = document.createElement("input");
        
        for(var nIndex = 0; nIndex < elmFileInput.attributes.length; nIndex++)
        {
            if(elmFileInput.attributes[nIndex].nodeName.toLowerCase() != "value")
            {
                elmFileInputCleared.setAttribute(elmFileInput.attributes[nIndex].nodeName, elmFileInput.attributes[nIndex].nodeValue);
            }
        }
    }
    
    elmFileInput.parentNode.insertBefore(elmFileInputCleared, elmFileInput);
    
    elmFileInput.parentNode.removeChild(elmFileInput);
}

Common.getParentElementWithByIDEnd = function(elmCurrent, strIDPostfix)
{
    for(;;)
    {
        elmCurrent = elmCurrent.parentNode;
        
        var strID = elmCurrent.id;
        
        if(strID != undefined && strID != "undefined")
        {
            if(strID.length >= strIDPostfix.length)
            {
                if(strID.substring(strID.length - strIDPostfix.length) == strIDPostfix)
                {
                    return elmCurrent;
                }
            }
        }
    }
    
    return null;
}

Common.decodeURI = function(strURI)
{
    var regexPlusSymbolEncodedSpace = new RegExp("\\+", "gi")
    strURI = strURI.replace(regexPlusSymbolEncodedSpace, "%20");
    
    strURI = decodeURI(strURI);
    
    var regexPlusSymbolEncodedSpace = new RegExp("%2f", "ig")
    strURI = strURI.replace(regexPlusSymbolEncodedSpace, "/");
    
    var regexPlusSymbolEncodedSpace = new RegExp("%3d", "ig")
    strURI = strURI.replace(regexPlusSymbolEncodedSpace, "=");
    
    var regexPlusSymbolEncodedSpace = new RegExp("%3a", "ig")
    strURI = strURI.replace(regexPlusSymbolEncodedSpace, ":");
    
    var regexPlusSymbolEncodedSpace = new RegExp("%3b", "ig")
    strURI = strURI.replace(regexPlusSymbolEncodedSpace, ";");
    
    return strURI;
}

Common.hasVisibleHTMLContent = function(strValue)
{
    strValue = strValue.toLowerCase();
    
    if(strValue.indexOf("<img") != -1)
    {
        return true;
    }
    
    var regexHTMLTags = new RegExp("(<([^>]+)>)|&nbsp;| |\n|\r|\t", "ig");
    strValue = strValue.replace(regexHTMLTags, "");
    strValue = strValue.trim();
    
    return strValue.length > 0;
}

Common.getElementsByClassName = function(strClassName, elmParentNode)
{
    if(!elmParentNode)
    {
        elmParentNode = document.getElementsByTagName("body")[0];
    }
        
    var arrElements = [];
    var regexClassName = new RegExp("\\b" + strClassName + "\\b");
    var arrAllElements = elmParentNode.getElementsByTagName("*");
    
    for(var nIndex = 0; nIndex < arrAllElements.length; ++nIndex)
    {
        if(regexClassName.test(arrAllElements[nIndex].className))
        {
            arrElements.push(arrAllElements[nIndex]);
        }
    }
    
    return arrElements;
}

Common.encodeLineBreaksToHTML = function(strValue)
{
    var regexNewlines = new RegExp("\n", "gi");
    strValue = strValue.replace(regexNewlines, "<br />");
    
    return strValue;
}

String.prototype.trim = function()
{
    var regexTrim = new RegExp("^\s+|\s+$", "gi");
    strValue = strValue.replace(regexTrim, "");
}

if(!Common.Form)
{
    Common.Form = {};
}

Common.Form.interceptEnterKey = function(elmInput, elmAction)
{
    elmInput.onkeyup = function(e)
    {
        var nCharacterCode;

        if(window.event)
        {
            nCharacterCode = window.event.keyCode
        }
        else
        {
            nCharacterCode = e.which;
        }

        if(nCharacterCode == 13)
        {
            var bSubmitForm = false;
            
            if(elmAction.click)
            {
                elmAction.click();
            }

            if(elmAction.type)
            {
                if(elmAction.type.toLowerCase() == "submit" || elmAction.type.toLowerCase() == "image")
                {
                    if(document.forms[0].onsubmit)
                    {
                        document.forms[0].onsubmit();
                    }
                    
                    bSubmitForm = true;
                }
            }
            
            if(bSubmitForm)
            {
                document.forms[0].submit();
            }
            else
            {
                if(window.event)
                {
                    window.event.returnValue = false;
                }
                else
                {
                    e.preventDefault();
                }
             }
        }
    };
}

Common.invokeAction = function(elmElement)
{
    if(elmElement.onclick)
    {
        eval(elmElement.onclick);
    }
    
    if(elmElement.href)
    {
        var strHRef = elmElement.href;
        
        if(strHRef.trim().toLowerCase().indexOf("javascript:") == 0)
        {
            strHRef = strHRef.trim().substring("javascript:".length);
            
            strHRef = Common.decodeURI(strHRef);
            
            eval(strHRef);
        }
        else
        {
            if(elmElement.target)
            {
                switch(elmElement.target.toLowerCase())
                {
                    case "_top":
                        window.top = strHRef;
                        break;
                    case "_parent":
                        window.parent = strHRef;
                        break;
                    case "_self":
                        window.location = strHRef;
                        break;
                    case "_blank":
                        window.open(strHRef);
                        break;
                    default:
                        window.frames[elmElement.target].location = strHRef;
                        break;
                }
            }
            else
            {
                window.location = strHRef;
            }
        }
    }
    
    if(elmElement.type)
    {
        var strType = elmElement.type.toLowerCase();
        
        if(strType == "submit" || strType == "image")
        {
            var bSubmit = true;
            
            if(document.forms[0].onsubmit)
            {
                if(document.forms[0].onsubmit.trim().indexOf("return") == 0)
                {
                    eval("bSubmit = " +document.forms[0].onsubmit.trim().substring("return".length));
                }
                else
                {
                    eval(document.forms[0].onsubmit);
                }
            }
            
            if(bSubmit)
            {
                document.forms[0].submit();
            }
        }
    }
}