function getPageFileName(str) {
    if ("undefined" == typeof (str)) {
        str = location.href;
    }

    str = str.split(/[\/\\]/);
    str = (str[str.length - 1]);

    if (str.indexOf('?') > -1) {
        str = str.substring(0, str.indexOf('?'));
    }

    return str;
}

var getElementsByClassName = function (className, tag, elm){
	if (document.getElementsByClassName) {
		getElementsByClassName = function (className, tag, elm) {
			elm = elm || document;
			var elements = elm.getElementsByClassName(className),
				nodeName = (tag)? new RegExp("\\b" + tag + "\\b", "i") : null,
				returnElements = [],
				current;
			for(var i=0, il=elements.length; i<il; i+=1){
				current = elements[i];
				if(!nodeName || nodeName.test(current.nodeName)) {
					returnElements.push(current);
				}
			}
			return returnElements;
		};
	}
	else if (document.evaluate) {
		getElementsByClassName = function (className, tag, elm) {
			tag = tag || "*";
			elm = elm || document;
			var classes = className.split(" "),
				classesToCheck = "",
				xhtmlNamespace = "http://www.w3.org/1999/xhtml",
				namespaceResolver = (document.documentElement.namespaceURI === xhtmlNamespace)? xhtmlNamespace : null,
				returnElements = [],
				elements,
				node;
			for(var j=0, jl=classes.length; j<jl; j+=1){
				classesToCheck += "[contains(concat(' ', @class, ' '), ' " + classes[j] + " ')]";
			}
			try	{
				elements = document.evaluate(".//" + tag + classesToCheck, elm, namespaceResolver, 0, null);
			}
			catch (e) {
				elements = document.evaluate(".//" + tag + classesToCheck, elm, null, 0, null);
			}
			while ((node = elements.iterateNext())) {
				returnElements.push(node);
			}
			return returnElements;
		};
	}
	else {
		getElementsByClassName = function (className, tag, elm) {
			tag = tag || "*";
			elm = elm || document;
			var classes = className.split(" "),
				classesToCheck = [],
				elements = (tag === "*" && elm.all)? elm.all : elm.getElementsByTagName(tag),
				current,
				returnElements = [],
				match;
			for(var k=0, kl=classes.length; k<kl; k+=1){
				classesToCheck.push(new RegExp("(^|\\s)" + classes[k] + "(\\s|$)"));
			}
			for(var l=0, ll=elements.length; l<ll; l+=1){
				current = elements[l];
				match = false;
				for(var m=0, ml=classesToCheck.length; m<ml; m+=1){
					match = classesToCheck[m].test(current.className);
					if (!match) {
						break;
					}
				}
				if (match) {
					returnElements.push(current);
				}
			}
			return returnElements;
		};
	}
	return getElementsByClassName(className, tag, elm);
};

var firstTime = true;

/**************** DIV COLUMNS ****************/

function SetupDivColumns()
{
    if (firstTime)
    {
        firstTime = false;
        //if (document.all)
        {
            SetupDivColumns();
        }
    }
    
    var paneColumnCollections = getElementsByClassName('PaneColumnCollection');
                    
    for (var paneColumnCollectionCounter = 0; paneColumnCollectionCounter < paneColumnCollections.length; paneColumnCollectionCounter++)
    {
        var paneColumnCollection = paneColumnCollections[paneColumnCollectionCounter];
        var divs = paneColumnCollection.childNodes;
        
        var childDivCount = 0;
        
        // Find out how many children there are
        for (var divCounter = 0; divCounter < divs.length; divCounter++)
        {
            var div = divs[divCounter];
            
            if (div.tagName && div.tagName == 'DIV' && div.className == 'PaneColumn')
            {
                childDivCount++;
            }
        }
        
        if (paneColumnCollection.attributes.columnspacing != undefined)
            var columnSpacing = parseInt(paneColumnCollection.attributes.columnspacing.value.replace('px', ''));
        else
            var columnSpacing = 0;
        
        // Account for column spacing
        var containerWidth = paneColumnCollection.clientWidth - (columnSpacing * (childDivCount - 1));
        if (containerWidth < 0) containerWidth = 0;
        var biggestHeight = 0;        
        var firstChild = true;
        
        for (var divCounter = 0; divCounter < divs.length; divCounter++)
        {
            var div = divs[divCounter];
            
            if (div.tagName && div.tagName == 'DIV' && div.className == 'PaneColumn')
            {
                if (firstChild)
                {                    
                    firstChild = false;
                }
                else
                {
                    div.style.marginLeft = columnSpacing + 'px';
                }
                
                div.style.width = (containerWidth * div.attributes.width.value) + 'px';
                div.style.styleFloat = 'left';  // IE
                div.style.cssFloat = 'left';    // Firefox
                
                if (div.clientHeight > biggestHeight)
                {
                    biggestHeight = div.clientHeight;
                }
            }
        }
        
        paneColumnCollection.style.height = biggestHeight + 'px';
    }
}

window.onresize = SetupDivColumns;
window.onload = SetupDivColumns;

function mergeUrlParameters(newParams) {
    var url = window.location.toString();

    if (url.indexOf('?') != -1) {
        var baseUrl = url.split('?')[0];
        var queryString = url.split('?')[1];
    }
    else {
        var baseUrl = url;
        var queryString = '';
    }

    var params = {};

    if (queryString.length > 0) {
        pairs = queryString.split('&');

        for (var pairCounter = 0; pairCounter < pairs.length; pairCounter++) {
            var pair = pairs[pairCounter];

            var key = pair.split('=')[0].toLowerCase();
            var value = pair.split('=')[1];

            params[key] = value;
        }
    }

    var lowerNewParams = {};

    for (var key in newParams) {
        var value = newParams[key];
        if (value) {
            lowerNewParams[key.toString().toLowerCase()] = value;
        }
        else {
            lowerNewParams[key.toString().toLowerCase()] = null;
        }
    }

    jQuery.extend(params, lowerNewParams);

    var newUrl = baseUrl + '?';

    for (var key in params) {
        var value = params[key];

        if (value) {
            newUrl += key + '=' + value + '&';
        }
    }

    if (newUrl[newUrl.length - 1] == '&') newUrl = newUrl.substring(0, newUrl.length - 1);

    return newUrl;
}