/************************************************************************************************************
	(C) www.dhtmlgoodies.com, June 2006
	
	This is a script from www.dhtmlgoodies.com. You will find this and a lot of other scripts at our website.	
	
	Terms of use:
	You are free to use this script as long as the copyright message is kept intact. However, you may not
	redistribute, sell or repost it without our permission.
	
	Thank you!
	
	www.dhtmlgoodies.com
	Alf Magne Kalleland
	
	************************************************************************************************************/	

	
	
	
	var opacitySpeed = 1;	// Speed of opacity - switching between large images - Lower = faster
	var opacitySteps = 10; 	// Also speed of opacity - Higher = faster
	var slideSpeed = 5;	// Speed of thumbnail slide - Lower = faster
	var slideSteps = 8;	// Also speed of thumbnail slide - Higher = faster
	var columnsOfThumbnails = false;	// Hardcoded number of thumbnail columns, use false if you want the script to figure it out dynamically.
	
	/* Don't change anything below here */
	var DHTMLgoodies_largeImage = false;
	var DHTMLgoodies_imageToShow = false;
	var DHTMLgoodies_currentOpacity = 100;
	var DHTMLgoodies_slideWidth = false;
	var DHTMLgoodies_thumbTotalWidth = false;
	var DHTMLgoodies_viewableWidth = false;
	
	var currentUnqiueOpacityId = false;
	var DHTMLgoodies_currentActiveImage = false;
	var DHTMLgoodies_thumbDiv = false;
	var DHTMLgoodies_thumbSlideInProgress = false;
	
	var browserIsOpera = navigator.userAgent.indexOf('Opera')>=0?true:false;
	var leftArrowObj;
	var rightArrowObj;
	var thumbsColIndex = 1;
	var thumbsLeftPos = false;
	
	function initGalleryScript()
	{
		leftArrowObj = document.getElementById('DHTMLgoodies_leftArrow');		
		leftArrowObj.style.visibility='hidden';
		rightArrowObj = document.getElementById('DHTMLgoodies_rightArrow');
		leftArrowObj.style.cursor = 'pointer';	
		rightArrowObj.style.cursor = 'pointer';	
		leftArrowObj.onclick = moveThumbnails;
		rightArrowObj.onclick = moveThumbnails;
		DHTMLgoodies_largeImage = document.getElementById('DHTMLgoodies_largeImage').getElementsByTagName('IMG')[0];
		var innerDiv = document.getElementById('DHTMLgoodies_thumbs_inner');
		DHTMLgoodies_slideWidth = innerDiv.getElementsByTagName('DIV')[0].offsetWidth;
		DHTMLgoodies_thumbDiv = document.getElementById('DHTMLgoodies_thumbs_inner');
		DHTMLgoodies_thumbDiv.style.left = '0px';
		
		var subDivs = DHTMLgoodies_thumbDiv.getElementsByTagName('DIV');
		DHTMLgoodies_thumbTotalWidth = 0;
		var tmpLeft = 0;
		for(var no=0;no<subDivs.length;no++){
			if(subDivs[no].className=='strip_of_thumbnails'){
				DHTMLgoodies_thumbTotalWidth = DHTMLgoodies_thumbTotalWidth + DHTMLgoodies_slideWidth;
				subDivs[no].style.left = tmpLeft + 'px';
				subDivs[no].style.top = '0px';
				tmpLeft = tmpLeft + subDivs[no].offsetWidth;
			}
		}

		DHTMLgoodies_viewableWidth = document.getElementById('DHTMLgoodies_thumbs').offsetWidth;
		
		
		DHTMLgoodies_currentActiveImage = DHTMLgoodies_thumbDiv.getElementsByTagName('A')[0].getElementsByTagName('IMG')[0];
		DHTMLgoodies_currentActiveImage.className='activeImage';
	}
	
	function moveThumbnails()
	{
		if(DHTMLgoodies_thumbSlideInProgress)return;
		DHTMLgoodies_thumbSlideInProgress = true;
		if(this.id=='DHTMLgoodies_leftArrow'){
			thumbsColIndex--;
			rightArrowObj.style.visibility='visible';
			if(DHTMLgoodies_thumbDiv.style.left.replace('px','')/1>=0){
				leftArrowObj.style.visibility='hidden';
				DHTMLgoodies_thumbSlideInProgress = false;
				return;
			}
			
			slideThumbs(slideSteps,0);
			
		}else{
			thumbsColIndex++;
			leftArrowObj.style.visibility='visible';
			var left = DHTMLgoodies_thumbDiv.style.left.replace('px','')/1;	
			var showArrow = true;
			if(DHTMLgoodies_thumbTotalWidth + left - DHTMLgoodies_slideWidth <= DHTMLgoodies_viewableWidth)showArrow = false;
			if(columnsOfThumbnails)showArrow = true;
				
			if(!showArrow)	
			{
				rightArrowObj.style.visibility='hidden';
				DHTMLgoodies_thumbSlideInProgress = false;
				return;
			}	
			
			slideThumbs((slideSteps*-1),0);
		}	
		
	}
	
	function slideThumbs(speed,currentPos)
	{
		var leftPos;
		if(thumbsLeftPos){
			leftPos= thumbsLeftPos;
		}else{
			var leftPos = DHTMLgoodies_thumbDiv.style.left.replace('px','')/1;
			thumbsLeftPos = leftPos;
		}
		currentPos = currentPos + Math.abs(speed);		
		var tmpLeftPos = leftPos;
		leftPos = leftPos + speed;
		thumbsLeftPos = leftPos;
		DHTMLgoodies_thumbDiv.style.left = leftPos+6 + 'px';
		if(currentPos<DHTMLgoodies_slideWidth)setTimeout('slideThumbs(' + speed + ',' + currentPos + ')',slideSpeed);else{
			if(tmpLeftPos>=0 || (columnsOfThumbnails && thumbsColIndex==1)){
				document.getElementById('DHTMLgoodies_leftArrow').style.visibility='hidden';
			}	
			var left = tmpLeftPos;		
			var showArrow = true;
			if(DHTMLgoodies_thumbTotalWidth + left - DHTMLgoodies_slideWidth <= DHTMLgoodies_viewableWidth)showArrow=false;
			if(columnsOfThumbnails){
				if((thumbsColIndex+1)<columnsOfThumbnails)showArrow=true; else showArrow = false;				
			}			
			if(!showArrow){
				document.getElementById('DHTMLgoodies_rightArrow').style.visibility='hidden';
			}					
			DHTMLgoodies_thumbSlideInProgress = false;
		}
	
	}

	
	function setOpacity()
	{
		if(document.all)
		{
			DHTMLgoodies_largeImage.style.filter = 'alpha(opacity=' + DHTMLgoodies_currentOpacity + ')';
		}else{
			DHTMLgoodies_largeImage.style.opacity = DHTMLgoodies_currentOpacity/100;
		}		
	}
	function moveOpacity(speed,uniqueId)
	{
		
		if(browserIsOpera){
			DHTMLgoodies_largeImage.src = DHTMLgoodies_imageToShow;
			return;
		}
		
		DHTMLgoodies_currentOpacity = DHTMLgoodies_currentOpacity + speed;
		if(DHTMLgoodies_currentOpacity<=5 && speed<0){
		
			var tmpParent = DHTMLgoodies_largeImage.parentNode; 
			DHTMLgoodies_largeImage.parentNode.removeChild(DHTMLgoodies_largeImage);
			DHTMLgoodies_largeImage = document.createElement('IMG');
			tmpParent.appendChild(DHTMLgoodies_largeImage);
			setOpacity();
			DHTMLgoodies_largeImage.src = DHTMLgoodies_imageToShow;
			/*set width and height*/
			 var height = DHTMLgoodies_largeImage.height;
            var width = DHTMLgoodies_largeImage.width;
           
            //check if width exceeds
            if(width>550)
            {
            DHTMLgoodies_largeImage.width="550";
            var newheight;
            newheight=(height/width)*550; //Resize image in proportion
            DHTMLgoodies_largeImage.height = newheight;
            }
            else
            {
            var newheight;
            DHTMLgoodies_largeImage.height=height;
            //DHTMLgoodies_largeImage.width=width;
            newheight=DHTMLgoodies_largeImage.height;
            }
            
            //check if height exceeds
            if(height>400)
            {
            DHTMLgoodies_largeImage.height="400";
            var newwidth;
            newwidth=(width/height)*400; //Resize image in proportion
            DHTMLgoodies_largeImage.width = newwidth;
            }
            else
            {
            var newwidth;
            DHTMLgoodies_largeImage.width=width;
            //DHTMLgoodies_largeImage.height=height;
            newwidth=DHTMLgoodies_largeImage.width;
            }
            if(newwidth>550 || newwidth<=0)
            {
            DHTMLgoodies_largeImage.width="550";
            }
            if(newheight>400 || newheight<=0)
            {
            DHTMLgoodies_largeImage.height="400";
            }
			/*set width and height*/
				
			speed=opacitySteps;
		}
		if(DHTMLgoodies_currentOpacity>=99 && speed>0)DHTMLgoodies_currentOpacity=99;		
		setOpacity();	
		if(DHTMLgoodies_currentOpacity>=99 && speed>0)return;		
		if(uniqueId==currentUnqiueOpacityId)setTimeout('moveOpacity(' + speed + ',' + uniqueId + ')',opacitySpeed);		
	}
	function showPreview(imagePath,inputObj,captiontext,targetlink)
    { 
        if(DHTMLgoodies_currentActiveImage){
            if(DHTMLgoodies_currentActiveImage==inputObj.getElementsByTagName('IMG')[0])return;
            DHTMLgoodies_currentActiveImage.className='';
        }
        DHTMLgoodies_currentActiveImage = inputObj.getElementsByTagName('IMG')[0];
        DHTMLgoodies_currentActiveImage.className='activeImage';
        DHTMLgoodies_imageToShow = imagePath;
        var tmpImage = new Image();
        tmpImage.src = imagePath;
        currentUnqiueOpacityId = Math.random();
        moveOpacity(opacitySteps*-1,currentUnqiueOpacityId);
        document.getElementById("phototext").innerHTML=captiontext;
        document.getElementById("ImageLink").href=targetlink;
    }
    function showPreview2(imagePath,inputObj,captiontext,targetlink,photocredit)
    { 
        if(DHTMLgoodies_currentActiveImage){
            if(DHTMLgoodies_currentActiveImage==inputObj.getElementsByTagName('IMG')[0])return;
            DHTMLgoodies_currentActiveImage.className='';
        }
        DHTMLgoodies_currentActiveImage = inputObj.getElementsByTagName('IMG')[0];
        DHTMLgoodies_currentActiveImage.className='activeImage';
        DHTMLgoodies_imageToShow = imagePath;
        var tmpImage = new Image();
        tmpImage.src = imagePath;
        currentUnqiueOpacityId = Math.random();
        moveOpacity(opacitySteps*-1,currentUnqiueOpacityId);
        document.getElementById("phototext").innerHTML=captiontext;
        document.getElementById("ImageLink").href=targetlink;
        document.getElementById("divmultiphotopiccredit").innerHTML=photocredit; 
    }
//	function showPreview(imagePath,inputObj,captiontext)
//	{		

//		if(DHTMLgoodies_currentActiveImage){
//			if(DHTMLgoodies_currentActiveImage==inputObj.getElementsByTagName('IMG')[0])return;
//			DHTMLgoodies_currentActiveImage.className='';
//		}
//		DHTMLgoodies_currentActiveImage = inputObj.getElementsByTagName('IMG')[0];
//		DHTMLgoodies_currentActiveImage.className='activeImage';
//		
//		DHTMLgoodies_imageToShow = imagePath;
//		var tmpImage = new Image();
//		tmpImage.src = imagePath;
//	   
//		currentUnqiueOpacityId = Math.random();
//		moveOpacity(opacitySteps*-1,currentUnqiueOpacityId);
//		document.getElementById("phototext").innerHTML=captiontext;
//	}
	function resizeit_article(imagepath)
	{
	
    var imgname=imagepath;
        //get image width and height
        var newImg = new Image();
        newImg.src = imagepath;
        var height = newImg.height;
        var width = newImg.width;
       
        //check if width exceeds
        if(width>550)
        {
        document.getElementById('slideshow').width="550";
        var newheight;
        newheight=(height/width)*550; //Resize image in proportion
        document.getElementById('slideshow').height = newheight;
        }
        else
        {
        var newheight;
        document.getElementById('slideshow').height=height;
        document.getElementById('slideshow').width=width;
        newheight=document.getElementById('slideshow').height;
        }
        
        //check if height exceeds
        if(height>400)
        {
        document.getElementById('slideshow').height="400";
        var newwidth;
        newwidth=(width/height)*400; //Resize image in proportion
        document.getElementById('slideshow').width = newwidth;
        }
        else
        {
        var newwidth;
        document.getElementById('slideshow').width=width;
        document.getElementById('slideshow').height=height;
        newwidth=document.getElementById('slideshow').width;
        }
        //alert(newwidth);
        //alert(newheight);
        if(newwidth>550 || newwidth<=0)
        {
        document.getElementById('slideshow').width="550";
        }
        if(newheight>400 || newheight<=0)
        {
        document.getElementById('slideshow').height="400";
        }
       document.getElementById('slideshow').border="0"; 
	}