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 shiftOpacity(id, millisec) {
	//if an element is invisible, make it visible, else make it ivisible
	if(document.getElementById(id).style.opacity == 0) {
		opacity(id, 0, 100, millisec);
	} else {
		opacity(id, 100, 0, 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 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 Screen()
{
    //Height
    var myWidth = 0, myHeight = 0;
    if( typeof( window.innerWidth ) == 'number' )
    {
        //Non-IE
        myWidth = window.innerWidth;
        myHeight = window.innerHeight;
    }
    else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) )
    {
        //IE 6+ in 'standards compliant mode'
        myWidth = document.documentElement.clientWidth;
        myHeight = document.documentElement.clientHeight;
    }
    else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) )
    {
        //IE 4 compatible
        myWidth = document.body.clientWidth;
        myHeight = document.body.clientHeight;
    }
    return [myWidth, myHeight];

}

function startVideoTextEffect() {

    changeOpac(0, "video_text");

    setTimeout('opacity("video_text", 0, 100, 500)', 600);
    setTimeout('opacity("video_text", 100, 0, 500)', 1100);
    setTimeout('opacity("video_text", 0, 100, 500)', 1600);
    setTimeout('opacity("video_text", 100, 0, 500)', 2100);
    setTimeout('opacity("video_text", 0, 100, 500)', 2600);

    setTimeout('opacity("video_text", 100, 0, 500)', 18600);
    /*
    setTimeout('opacity("video_text", 0, 100, 500)', 4600);
    setTimeout('opacity("video_text", 100, 0, 500)', 5100);
    setTimeout('opacity("video_text", 0, 100, 500)', 5600);
    setTimeout('opacity("video_text", 100, 0, 500)', 6100);
    setTimeout('opacity("video_text", 0, 100, 500)', 6600);
    setTimeout('opacity("video_text", 100, 0, 500)', 7100);
    setTimeout('opacity("video_text", 0, 100, 500)', 7600);
    setTimeout('opacity("video_text", 100, 0, 500)', 8100);
    */
}