// JScript File

dw_scrollObjs = {};
dw_scrollObj.speed = 100; 
function dw_scrollObj(wnId, lyrId, cntId) 
{
    this.id = wnId; dw_scrollObjs[this.id] = this;
    this.animString = "dw_scrollObjs." + this.id;
    this.load(lyrId, cntId);
}
dw_scrollObj.loadLayer = function(wnId, id, cntId) {
if ( dw_scrollObjs[wnId] ) dw_scrollObjs[wnId].load(id, cntId);
}
dw_scrollObj.prototype.load = function(lyrId, cntId) {
if (!document.getElementById) return;
var wndo, lyr;
if (this.lyrId) {
	lyr = document.getElementById(this.lyrId);
	lyr.style.visibility = "hidden";
}
lyr = document.getElementById(lyrId);
wndo = document.getElementById(this.id);
lyr.style.top = this.y = 0; lyr.style.left = this.x = 0;
this.maxY = (lyr.offsetHeight - wndo.offsetHeight > 0)? lyr.offsetHeight - wndo.offsetHeight: 0;
this.wd = cntId? document.getElementById(cntId).offsetWidth: lyr.offsetWidth;
this.maxX = (this.wd - wndo.offsetWidth > 0)? this.wd - wndo.offsetWidth: 0;
this.lyrId = lyrId; // hold id of currently visible layer
lyr.style.visibility = "visible";
this.on_load(); this.ready = true;
}
dw_scrollObj.prototype.on_load = function() {}  
dw_scrollObj.prototype.shiftTo = function(lyr, x, y) {
lyr.style.left = (this.x = x) + "px"; 
lyr.style.top = (this.y = y) + "px";
}
// remove layers from table for ns6+/mozilla (needed for scrolling inside tables)
dw_scrollObj.GeckoTableBugFix = function() {
var i, wndo, holderId, holder, x, y;
if ( navigator.userAgent.indexOf("Gecko") > -1 && navigator.userAgent.indexOf("Firefox") == -1 ) {
dw_scrollObj.hold = []; // holds id's of wndo and its container
for (i=0; arguments[i]; i++) {
if ( dw_scrollObjs[ arguments[i] ] ) {
	wndo = document.getElementById( arguments[i] );
	holderId = wndo.parentNode.id;
	holder = document.getElementById(holderId);
	document.body.appendChild( holder.removeChild(wndo) );
	wndo.style.zIndex = 1000;
	x = holder.offsetLeft; y = holder.offsetTop;
	wndo.style.left = x + "px"; wndo.style.top = y + "px";
	dw_scrollObj.hold[i] = [ arguments[i], holderId ];
}
}
window.addEventListener("resize", dw_scrollObj.rePositionGecko, true);
}
}
// ns6+/mozilla need to reposition layers onresize when scrolling inside tables.
dw_scrollObj.rePositionGecko = function()
{
var i, wndo, holder, x, y;
if (dw_scrollObj.hold)
{
	for (i=0; dw_scrollObj.hold[i]; i++) 
	{
	wndo = document.getElementById( dw_scrollObj.hold[i][0] );
	holder = document.getElementById( dw_scrollObj.hold[i][1] );
	x = holder.offsetLeft; y = holder.offsetTop;
	wndo.style.left = x + "px"; wndo.style.top = y + "px";
	}
}
}


dw_scrollObj.stopScroll = function(wnId) {
if ( dw_scrollObjs[wnId] ) dw_scrollObjs[wnId].endScroll();
}
// increase speed onmousedown of scroll links
dw_scrollObj.doubleSpeed = function(wnId) {
if ( dw_scrollObjs[wnId] ) dw_scrollObjs[wnId].speed *= 2;
}
dw_scrollObj.resetSpeed = function(wnId) {
if ( dw_scrollObjs[wnId] ) dw_scrollObjs[wnId].speed /= 2;
}
// algorithms for time-based scrolling and scrolling onmouseover at any angle adapted from youngpup.net
dw_scrollObj.initScroll = function(wnId, deg, sp) {
//document.getElementById('t2').innerHTML = document.frmPage.hdnHTML1.value;
if ( dw_scrollObjs[wnId] ) 
{    
	var cosine, sine;
	if (typeof deg == "string") 
	{  
	    switch (deg) 
	    {     
		    case "up"    : deg = 90; alert("hello90");  break;
		    case "down"  : deg = 270;alert("hello270"); break;
		    case "left"  : deg = 180;  break;
		    case "right" : deg = 0; 
		      if(wnId=="divMVP")
		      {
		        document.getElementById('ctl00_ContentPlaceHolder1_DivBackFav').style.display="";
		        document.getElementById('ctl00_ContentPlaceHolder1_DivBackFavDls').style.display="none"; 
		      }
		      else if(wnId=="divMVPH")
		      {
		        document.getElementById('DivBackFav').style.display="";
		        document.getElementById('DivBackFavDls').style.display="none"; 
		      }
		      else
		      {
		        document.getElementById('ctl00_ContentPlaceHolder1_DivPrev').style.display="";
		        document.getElementById('ctl00_ContentPlaceHolder1_DivPrevDls').style.display="none"; 
		      }
		       
		      break;
		    default: 
		    alert("Direction of scroll in mouseover scroll links should be 'up', 'down', 'left', 'right' or number: 0 to 360.");
	    }
	} 
    deg = deg % 360;
    if (deg % 90 == 0) 
    {
        cosine = (deg == 0)? -1: (deg == 180)? 1: 0;
        sine = (deg == 90)? 1: (deg == 270)? -1: 0;
    } 
    else 
    {
        var angle = deg * Math.PI/180;
        cosine = -Math.cos(angle); sine = Math.sin(angle);
    }
	dw_scrollObjs[wnId].fx = cosine / ( Math.abs(cosine) + Math.abs(sine) );
	dw_scrollObjs[wnId].fy = sine / ( Math.abs(cosine) + Math.abs(sine) );
	dw_scrollObjs[wnId].endX = (deg == 90 || deg == 270)? dw_scrollObjs[wnId].x:
	(deg < 90 || deg > 270)? -dw_scrollObjs[wnId].maxX: 0; 
	dw_scrollObjs[wnId].endY = (deg == 0 || deg == 180)? dw_scrollObjs[wnId].y: 
	(deg < 180)? 0: -dw_scrollObjs[wnId].maxY;
	dw_scrollObjs[wnId].startScroll(sp);
}
}
// speed (optional) to override default speed (set in dw_scrollObj.speed)
dw_scrollObj.prototype.startScroll = function(speed) {
if (!this.ready) return; if (this.timerId) clearInterval(this.timerId);
this.speed = speed || dw_scrollObj.speed;
this.lyr = document.getElementById(this.lyrId);
this.lastTime = ( new Date() ).getTime();
this.on_scroll_start();  
this.timerId = setInterval(this.animString + ".scroll()", 10); 
}
dw_scrollObj.prototype.scroll = function() {
var now = ( new Date() ).getTime();
var d = (now - this.lastTime)/1000 * this.speed;
if (d > 0) {
	var x = this.x + this.fx * d; var y = this.y + this.fy * d;
	if (this.fx == 0 || this.fy == 0) { // for horizontal or vertical scrolling
	if ( ( this.fx == -1 && x > -this.maxX ) || ( this.fx == 1 && x < 0 ) || 
		( this.fy == -1 && y > -this.maxY ) || ( this.fy == 1 && y < 0 ) ) {
		this.lastTime = now;
		this.shiftTo(this.lyr, x, y);
		this.on_scroll(x, y);
	} else {
		clearInterval(this.timerId); this.timerId = 0;
		this.shiftTo(this.lyr, this.endX, this.endY);
		this.on_scroll_end(this.endX, this.endY);
	}
	} else { // for scrolling at an angle (stop when reach end on one axis)
	if ( ( this.fx < 0 && x >= -this.maxX && this.fy < 0 && y >= -this.maxY ) ||
		( this.fx > 0 && x <= 0 && this.fy > 0 && y <= 0 ) ||( this.fx < 0 && x >= -this.maxX && this.fy > 0 && y <= 0 ) ||
		( this.fx > 0 && x <= 0 && this.fy < 0 && y >= -this.maxY ) ) { 
		this.lastTime = now;
		this.shiftTo(this.lyr, x, y);
		this.on_scroll(x, y);
	} else {
		clearInterval(this.timerId); this.timerId = 0;
		this.on_scroll_end(this.x, this.y);
	}
	}
}
}
dw_scrollObj.prototype.endScroll = function() {
if (!this.ready) return;
if (this.timerId) clearInterval(this.timerId);
this.timerId = 0;  this.lyr = null;
}
dw_scrollObj.prototype.on_scroll = function() {}
dw_scrollObj.prototype.on_scroll_start = function() {}
dw_scrollObj.prototype.on_scroll_end = function() {}


function initScrollLayer(div1, div2, table1) 
{
	// arguments: id of layer containing scrolling layers (clipped layer), id of layer to scroll, 
	// if horizontal scrolling, id of element containing scrolling content (table?)
	//var wndo = new dw_scrollObj('divMVP', 'divMVPInner', 'tableMVP');
	var wndo = new dw_scrollObj(div1, div2, table1);
	//alert(table1);
	// pass id's of any wndo's that scroll inside tables
	// i.e., if you have 3 (with id's wn1, wn2, wn3): dw_scrollObj.GeckoTableBugFix('wn1', 'wn2', 'wn3');
	//dw_scrollObj.GeckoTableBugFix('wn'); 
	//dw_scrollObj.GeckoTableBugFix('wn1'); 
}