// toggle project view
function toggleView() {
	slideLayer = document.getElementById("prjSlideshow").style;
	if (slideLayer) {
		if (slideLayer.display == "block") {
			slideLayer.display = "none";
			document.getElementById("screen_on").style.display = "none";
			document.getElementById("screen_off").style.display = "block";
		}
		else {
			slideLayer.display = "block";
			document.getElementById("screen_on").style.display = "block";
			document.getElementById("screen_off").style.display = "none";
		}
	}
	textLayer = document.getElementById("textDiv").style;
	textLayer2 = document.getElementById("textDiv2").style;
	if (textLayer) {
		if (textLayer.display == "block") {
			textLayer.display = "none";
			textLayer2.display = "none";
			document.getElementById("imageDiv").style.display = "none";
			document.getElementById("details_on").style.display = "none";
			document.getElementById("details_off").style.display = "block";
		}
		else {
			textLayer.display = "block";
			textLayer2.display = "block";
			document.getElementById("imageDiv").style.display = "block";
			document.getElementById("details_on").style.display = "block";
			document.getElementById("details_off").style.display = "none";
		}
	}
}

function shortenText(str, chars) {
	if (str.length > chars) {
		strEnd = chars - 3;
		str = str.slice(0, strEnd) + "...";
	}
	return str;
}


//______________________________________________________________________
// Images
var aImages = new Array();
function preLoader(imgName, src1, src2) {
	aImages[imgName] = new Array();
	aImages[imgName]["off"] = new Image();
	aImages[imgName]["off"].src = src1;
	aImages[imgName]["on"] = new Image();
	aImages[imgName]["on"].src = src2;
}
preLoader("scroll_up","web/pix/arrow_up.gif","web/pix/arrow_upHi.gif");
preLoader("scroll_down","web/pix/arrow_down.gif","web/pix/arrow_downHi.gif");
preLoader("scroll_up2","web/pix/arrow_up.gif","web/pix/arrow_upHi.gif");
preLoader("scroll_down2","web/pix/arrow_down.gif","web/pix/arrow_downHi.gif");
preLoader("back","web/pix/arrow_back.gif","web/pix/arrow_backHi.gif");
preLoader("frw","web/pix/arrow_frw.gif","web/pix/arrow_frwHi.gif");

function getImage(imgName, layerID) {
	return (document.all || document.getElementById ? window.document.images[imgName] : layerID ? document.layers[layerID].document.images[imgName] : window.document.images[imgName]);
}
function imgOn(imgName, layerID) {
	getImage(imgName, layerID).src = aImages[imgName]["on"].src;
}
function imgOff(imgName, layerID) {
	getImage(imgName, layerID).src = aImages[imgName]["off"].src;
}


//____________________________________________________________________
// popups
function openwin(url, w, h, r, s) {
	if (screen.height < h) { h = (screen.height-80); }
	owin = open(url,'','toolbar=0,status=1,scrollbars='+s+',width='+w+',height='+h+',resizable='+r+',top=0,left=0');
	owin.focus();
}


/********************************************************************/
// FLASH-DETECTION [oh -> adapted from Macromedia Flash-Detection-Kit]
/********************************************************************/
// Globals
// Major version of Flash required
var requiredMajorVersion = 7;
// Minor version of Flash required
var requiredMinorVersion = 0;
// Minor version of Flash required
var requiredRevision = 0;
// the version of javascript supported
var jsVersion = 1.0;

// Detect Client Browser type
var isIE  = (navigator.appVersion.indexOf("MSIE") != -1) ? true : false;
var isWin = (navigator.appVersion.toLowerCase().indexOf("win") != -1) ? true : false;
var isOpera = (navigator.userAgent.indexOf("Opera") != -1) ? true : false;
jsVersion = 1.1;

function JSGetSwfVer(i) { // JavaScript helper required to detect Flash Player PlugIn version information
	// NS/Opera version >= 3 check for Flash plugin in plugin array
	if (navigator.plugins != null && navigator.plugins.length > 0) {
		if (navigator.plugins["Shockwave Flash 2.0"] || navigator.plugins["Shockwave Flash"]) {
			var swVer2 = navigator.plugins["Shockwave Flash 2.0"] ? " 2.0" : "";
      		var flashDescription = navigator.plugins["Shockwave Flash" + swVer2].description;
			descArray = flashDescription.split(" ");
			tempArrayMajor = descArray[2].split(".");
			versionMajor = tempArrayMajor[0];
			versionMinor = tempArrayMajor[1];
			
			if (descArray[3] != "") { tempArrayMinor = descArray[3].split("r"); }
			else { tempArrayMinor = descArray[4].split("r"); }
      		
			versionRevision = tempArrayMinor[1] > 0 ? tempArrayMinor[1] : 0;
            flashVer = versionMajor + "." + versionMinor + "." + versionRevision;
      	}
		else { flashVer = -1; }
	}
	// MSN/WebTV 2.6 supports Flash 4
	else if (navigator.userAgent.toLowerCase().indexOf("webtv/2.6") != -1) { flashVer = 4; }
	// WebTV 2.5 supports Flash 3
	else if (navigator.userAgent.toLowerCase().indexOf("webtv/2.5") != -1) { flashVer = 3; }
	// older WebTV supports Flash 2
	else if (navigator.userAgent.toLowerCase().indexOf("webtv") != -1) { flashVer = 2; }
	// Can't detect in all other cases
	else { flashVer = -1; }
	return flashVer;
} 

function DetectFlashVer(reqMajorVer, reqMinorVer, reqRevision) {	// When called with reqMajorVer, reqMinorVer, reqRevision returns true if that version or greater is available
 	reqVer = parseFloat(reqMajorVer + "." + reqRevision);
   	// loop backwards through the versions until we find the newest version	
	for (i=25; i>0; i--) {	
		if (isIE && isWin && !isOpera) { versionStr = VBGetSwfVer(i); }
		else { versionStr = JSGetSwfVer(i); }
		
		if (versionStr == -1 ) { return false; }
		else if (versionStr != 0) {
			if (isIE && isWin && !isOpera) {
				tempArray         = versionStr.split(" ");
				tempString        = tempArray[1];
				versionArray      = tempString .split(",");				
			}
			else {
				versionArray      = versionStr.split(".");
			}
			versionMajor      = versionArray[0];
			versionMinor      = versionArray[1];
			versionRevision   = versionArray[2];
			
			versionString     = versionMajor + "." + versionRevision;   // 7.0r24 == 7.24
			versionNum        = parseFloat(versionString);
        	// is the major.revision >= requested major.revision AND the minor version >= requested minor
			if ((versionMajor > reqMajorVer) && (versionNum >= reqVer)) { return true; }
			else {
				return ((versionNum >= reqVer && versionMinor >= reqMinorVer) ? true : false );	
			}
		}
	}	
}

// Flash-Embed f??r IE
function embedFlash(oTag) { document.write(oTag); }