//---------------------------------------------------------------

// Opacity Displayer, Version 1.0

// Copyright Michael Lovitt, 6/2002.

// Distribute freely, but please leave this notice intact.

//---------------------------------------------------------------



//---------------------------------------------------------------

// OPACITY OBJECT

//

// Instantiates the object, defines the properties and methods.

function OpacityObject(divId, strPath) {

	this.id = divId;

	this.path = strPath;

	if (ns){

		if (browserVersion>=5) {

			this.layerObject = document.getElementById(divId).style;

		} else { 

			this.layerObject = eval("document."+divId);

		}

	} else {

		this.layerObject = eval(divId + ".style");

	}

	this.setBackground = od_object_setBackground;

}

// Uses AlphaImageLoader filter, or the css background property,

// as appropriate, to apply a PNG or GIF as the background of the layerObject.

function od_object_setBackground() {	

	if (pngAlpha) {

		this.layerObject.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='"+this.path+".png', sizingMethod='scale')";

	} else if (pngNormal) {

		this.layerObject.backgroundImage = 'url('+this.path+'.png)';

	} else {

		this.layerObject.backgroundImage = 'url('+this.path+'.gif)';

	}

}

//---------------------------------------------------------------



//---------------------------------------------------------------

// OPACITY DISPLAY FUNCTION

// Outputs the image as a div with the AlphaImageLoader, or with

// a standard image tag.

function od_displayImage(strId, strPath, intWidth, intHeight, strClass, strAlt) {	

	if (pngAlpha) {

		document.write('<div style="height:'+intHeight+'px;width:'+intWidth+'px;filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(src=\''+strPath+'.png\', sizingMethod=\'scale\')" id="'+strId+'" class="'+strClass+'"></div>');

	} else if (pngNormal) {

		document.write('<img src="'+strPath+'.png" width="'+intWidth+'" height="'+intHeight+'" name="'+strId+'" border="0" class="'+strClass+'" alt="'+strAlt+'" />');

	} else {

		document.write('<img src="'+strPath+'.gif" width="'+intWidth+'" height="'+intHeight+'" name="'+strId+'" border="0" class="'+strClass+'" alt="'+strAlt+'" />');

	}

}

//---------------------------------------------------------------



//---------------------------------------------------------------

// OPACITY ROLL-OVER FUNCTIONS

function od_rollOver(strId, strColor) {	

	if (pngAlpha) {

		document.getElementById(strId).style.backgroundColor = strColor;

	} else {

	    if (document.images && (flag == true)) {

	        document[strId].src = eval(strId + "on.src");

	    }

	}

}

function od_rollOut(strId, strColor) {	

	if (pngAlpha) {

		document.getElementById(strId).style.backgroundColor = strColor;

	} else {

	    if (document.images) {

	        document[strId].src = eval(strId + "off.src");

	    }

	}

}

//---------------------------------------------------------------



//---------------------------------------------------------------

// global variables



// if IE5.5+ on win32, then display PNGs with AlphaImageLoader

if ((browser.isIE55 || browser.isIE6up) && browser.isWin32) {

	var pngAlpha = true;

	var strExt = ".png";

// else, if the browser can display PNGs normally, then do that. that list includes:

	//     -Gecko Engine: Netscape 6 or Mozilla, Mac or PC

	//     -IE5+ Mac (OpacityObject applies the background image at 100% opacity)

	//     -Opera 6+ PC

	//     -Opera 5+ Mac (Doesn't support dynamically-set background images)

	//     -Opera 6+ Linux 

	//     -Omniweb 3.1+ 

	//     -Icab 1.9+ 

	//     -WebTV 

	//     -Sega Dreamcast

} else if ((browser.isGecko) || (browser.isIE5up && browser.isMac) || (browser.isOpera && browser.isWin && browser.versionMajor >= 6) || (browser.isOpera && browser.isUnix && browser.versionMajor >= 6) || (browser.isOpera && browser.isMac && browser.versionMajor >= 5) || (browser.isOmniweb && browser.versionMinor >= 3.1) || (browser.isIcab && browser.versionMinor >= 1.9) || (browser.isWebtv) || (browser.isDreamcast)) {

	var pngNormal = true;

	var strExt = ".png";

	// otherwise, we use plain old GIFs

} else {

	var strExt = ".gif";

}



var ns = (document.all)?false:true;

var browserVersion = parseFloat(navigator.appVersion );