var isNav4, isNav6, isIE4, isOpera, isMac;

function setBrowser()
{
		if (navigator.userAgent.indexOf("Mac") >= 0) isMac = true;
		if (navigator.appName.indexOf("Opera") >= 0) isOpera = true;
		else if (navigator.userAgent.indexOf("iCab") >= 0) isNav4 = true;
		else if (navigator.appVersion.charAt(0) == "4")
		{
				if (navigator.appName.indexOf("Explorer") >= 0) isIE4 = true;
				else isNav4 = true;
		}
		else if (navigator.appVersion.charAt(0) > "4") isNav6 = true;
}

function getStyleBySelector( selector )
{
    if (!isNav6 && !isOpera)
    {
        return null;
    }
    var sheetList = document.styleSheets;
    var ruleList;
    var i, j;

    for (i=sheetList.length-1; i >= 0; i--)
    {
        ruleList = sheetList[i].cssRules;
        for (j=0; j<ruleList.length; j++)
        {
            if (ruleList[j].type == CSSRule.STYLE_RULE &&
                ruleList[j].selectorText == selector)
            {
                return ruleList[j].style;
            }   
        }
    }
    return null;
}

function getIdProperty( id, property )
{
    if (isNav6 || isOpera)
    {
        var styleObject = document.getElementById( id );
        if (styleObject != null)
        {
            styleObject = styleObject.style;
            if (styleObject[property])
            {
                return styleObject[ property ];
            }
        }
        styleObject = getStyleBySelector( "#" + id );
        return (styleObject != null) ? styleObject[property] : null;
    }
    else if (isNav4)
    {
        return document[id][property];
    }
    else
    {
        return document.all[id].style[property];
    }
}

function setIdProperty( id, property, value )
{
    if (isNav6 || isOpera)
    {
        var styleObject = document.getElementById( id );
        if (styleObject != null)
        {
            styleObject = styleObject.style;
            styleObject[ property ] = value;
        }
    }
    else if (isNav4)
    {
        document[id][property] = value;
    }
    else if (isIE4)
    {
         document.all[id].style[property] = value;
    }
}

function generic_move( id, xValue, yValue, additive )
{
    var left = getIdProperty(id, "left");
    var top = getIdProperty(id, "top");
    var leftMatch, topMatch;

    if (isNav4)
    {
        return null;
    }
		var splitexp = /([-0-9.]+)(\w+)/;
		leftMatch = splitexp.exec( left );
		topMatch = splitexp.exec( top );
		if (leftMatch == null || topMatch == null)
		{
				leftMatch = new Array(0, 0, "px");
				topMatch = new Array(0, 0, "px");
		}
    left = ((additive) ? parseFloat( leftMatch[1] ) : 0) + xValue;
    top = ((additive) ? parseFloat( topMatch[1] ) : 0) + yValue;
    setIdProperty( id, "left", left + leftMatch[2] );
    setIdProperty( id, "top", top + topMatch[2] );
}

function moveTo( id, x, y )
{
    generic_move( id, x, y, false );
}

function moveBy( id, x, y)
{
    generic_move( id, x, y, true );
}

// Added additional functions below on 31/10/01  --Chat

function getPosition( id ) 
{
		if (isNav4)
		{
				return null;
		}
		
		var coordinates = new Object();
		var x=0;
		var y=0;
		
	 	if (isIE4) 
	 	{
				x = getOffsetLeft( document.all[id] ) - 2;
				y = getOffsetTop( document.all[id] ) + 24; // hard-coded for CB
				if (isMac) 
				{ 
						if (self.location.href.indexOf("/nba/template.html") != '-1' || 
								self.location.href.substring(self.location.href.length - 1, self.location.href.length) == '/')
						{
								x += -3;
						}
						else
						{
							x += -3;
						}
				}
		}
		else if (isNav6 || isOpera) 
		{
				o = document.getElementById( id );
				x = getOffsetLeft( o ) - 2;
				y = getOffsetTop( o ) + 12; // hard-coded for CB
		}
		else 
		{
				x = 0; 
				y = 0;
		}
		
		coordinates.x = x;
		coordinates.y = y;
		return coordinates;
}

function getOffsetLeft( o ) 
{
		var x = o.offsetLeft;
		while ((o = o.offsetParent) != null) 
		{ 
				x += o.offsetLeft; 
		}
		return x;
}

function getOffsetTop( o ) 
{
		var y = o.offsetTop;
		while((o = o.offsetParent) != null) 
		{ 
				y += o.offsetTop; 
		}
		return y;
}



function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}