function updateRollText(strRollText)
{
	document.getElementById('rolltext').innerHTML = strRollText
}

function opacity(id, opacStart, opacEnd, millisec) { 
    //speed for each frame 
    var speed = Math.round(millisec / 100); 
    var timer = 0; 

    //determine the direction for the blending, if start and end are the same nothing happens 
    if(opacStart > opacEnd) { 
        for(i = opacStart; i >= opacEnd; i--) { 
            setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed)); 
            timer++; 
        } 
    } else if(opacStart < opacEnd) { 
        for(i = opacStart; i <= opacEnd; i++) 
            { 
            setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed)); 
            timer++; 
        } 
    } 
}

//change the opacity for different browsers 
function changeOpac(opacity, id)
{ 
    var object = document.getElementById(id).style; 
    object.opacity = (opacity / 100); 
    object.MozOpacity = (opacity / 100); 
    object.KhtmlOpacity = (opacity / 100); 
    object.filter = "alpha(opacity=" + opacity + ")"; 
}

function currentOpac(id, opacEnd, millisec) { 
    //standard opacity is 100 
    var currentOpac = 100; 
     
    //if the element has an opacity set, get it 
    if(document.getElementById(id).style.opacity < 100) { 
        currentOpac = document.getElementById(id).style.opacity * 100; 
    } 

    //call for the function that changes the opacity 
    opacity(id, currentOpac, opacEnd, millisec) 
}

function blendimage(divid, imageid, imagefile, millisec)
{ 
    var speed = Math.round(millisec / 100); 
    var timer = 0; 
     
    //set the current image as background 
    document.getElementById(divid).style.backgroundImage = "url(" + document.getElementById(imageid).src + ")"; 
        
    //make image transparent 
    changeOpac(0, imageid); 
     
    //make new image 
    document.getElementById(imageid).src = imagefile; 

    //fade in image 
    for(i = 0; i <= 100; i++) { 
        setTimeout("changeOpac(" + i + ",'" + imageid + "')",(timer * speed)); 
        timer++; 
    } 
}

function blendimagev2(divid, imageid, imagefile, millisec) //prevents appearance of image toolbar and easy right-click saving
{ 
    var speed = Math.round(millisec / 100); 
    var timer = 0; 
     
    //set background to foreground
    demostr = document.getElementById(divid).style.backgroundImage
    imgurl = demostr.substring(4, demostr.length - 1)
    //alert(imgurl)
    document.getElementById(imageid).src = imgurl
    
    //make foreground visible
    document.getElementById(imageid).style.visibility='visible';
	document.getElementById(imageid).visibility='show';
    changeOpac(100, imageid)
    
    //set the next image as background 
    document.getElementById(divid).style.backgroundImage = "url(" + imagefile + ")"; 
     
    //fade out current image 
    for(i =100; i >= 0; i--) { 
        setTimeout("changeOpac(" + i + ",'" + imageid + "')",(timer * speed)); 
        timer++; 
    }
    setTimeout('setHidden()', 1000)
	   
    
}

function setHidden()
{
	//alert('hidden')
	document.getElementById('mainPhoto').style.visibility='hidden';
	document.getElementById('mainPhoto').visibility='hidden';
}