/* =======================================================
* ypSimpleScroll
* 3/11/2001
* 
* http://www.youngpup.net/
* ======================================================= */

// Modified by Sergi Meseguer (www.zigotica.com) 04/2004
// Now it works with dragger and can use multiple instances in a page



ypSimpleScroll.prototype.scrollNorth = function(count) { this.startScroll(90, count);}
ypSimpleScroll.prototype.scrollSouth = function(count) { this.startScroll(270, count);}
ypSimpleScroll.prototype.scrollWest = function(count) { this.startScroll(180, count);}
ypSimpleScroll.prototype.scrollEast = function(count) { this.startScroll(0, count);}

ypSimpleScroll.prototype.startScroll = function(deg, count) {
	if (this.loaded){
		if (this.aniTimer) window.clearTimeout(this.aniTimer)
		this.overrideScrollAngle(deg)
		this.speed = this.origSpeed
		this.lastTime = (new Date()).getTime() - this.y.minRes
		this.aniTimer = window.setTimeout(this.gRef + ".scroll('"+deg+"','"+count+"')", this.y.minRes)
	}
}

ypSimpleScroll.prototype.endScroll = function() {
	if (this.loaded){
		window.clearTimeout(this.aniTimer)
		this.aniTimer = 0;
		this.speed = this.origSpeed
	}
}

ypSimpleScroll.prototype.overrideScrollAngle = function(deg) {
	if (this.loaded){
		deg = deg % 360
		if (deg % 90 == 0) {
			var cos = deg == 0 ? 1 : deg == 180 ? -1 : 0
			var sin = deg == 90 ? -1 : deg == 270 ? 1 : 0
		} 
		else {
			var angle = deg * Math.PI / 180
			var cos = Math.cos(angle)
			var sin = Math.sin(angle)
			sin = -sin
		}
		this.fx = cos / (Math.abs(cos) + Math.abs(sin))
		this.fy = sin / (Math.abs(cos) + Math.abs(sin))
		this.stopH = deg == 90 || deg == 270 ? this.scrollLeft : deg < 90 || deg > 270 ? this.scrollW : 0
		this.stopV = deg == 0 || deg == 180 ? this.scrollTop : deg < 180 ? 0 : this.scrollH
	}
}

ypSimpleScroll.prototype.overrideScrollSpeed = function(speed) {
	if (this.loaded) this.speed = speed
}


ypSimpleScroll.prototype.scrollTo = function(stopH, stopV, aniLen) {
	if (this.loaded){
		if (stopH != this.scrollLeft || stopV != this.scrollTop) {
			if (this.aniTimer) window.clearTimeout(this.aniTimer)
			this.lastTime = (new Date()).getTime()
			var dx = Math.abs(stopH - this.scrollLeft)
			var dy = Math.abs(stopV - this.scrollTop)
			var d = Math.sqrt(Math.pow(dx,2) + Math.pow(dy,2))
			this.fx = (stopH - this.scrollLeft) / (dx + dy)
			this.fy = (stopV - this.scrollTop) / (dx + dy)
			this.stopH = stopH
			this.stopV = stopV
			this.speed = d / aniLen * 1000
			window.setTimeout(this.gRef + ".scroll()", this.y.minRes)
		}
	}
}

ypSimpleScroll.prototype.jumpTo = function(nx, ny) { 

	if (this.loaded){
		nx = Math.min(Math.max(nx, 0), this.scrollW)
		ny = Math.min(Math.max(ny, 0), this.scrollH)
		/*
		this.scrollLeft = nx
		this.scrollTop = ny
		*/
		if (this.y.ns4)this.content.moveTo(-nx, -ny)
		else {
		    
		    var bChangeLeft = true;
		    var bChangeTop = true;
		    
		    if (this.id == "scroll0"){
		        if ( !bIsNotFullWidth ) bChangeLeft = false;
		        if (!bIsNotFullHeight ) bChangeTop = false;
		    }
		    
		    if ((bChangeTop+bChangeLeft) % 2 ) {
		        if (bChangeLeft) { this.content.style.left = -nx + "px"; this.scrollLeft = nx;}
		        if (bChangeTop ) { this.content.style.top = -ny + "px";  this.scrollTop = ny;}
	        }
	        else {
	            this.scrollLeft = nx;
		        this.scrollTop = ny;
                this.content.style.left = -nx + "px";
                this.content.style.top = -ny + "px";
	            
	        }
            
           
		}
	}
}

ypSimpleScroll.minRes = 10
ypSimpleScroll.ie = document.all ? 1 : 0
ypSimpleScroll.ns4 = document.layers ? 1 : 0
ypSimpleScroll.dom = document.getElementById ? 1 : 0
ypSimpleScroll.mac = navigator.platform == "MacPPC"
ypSimpleScroll.mo5 = document.getElementById && !document.all ? 1 : 0

ypSimpleScroll.prototype.scroll = function(deg,count) {
	this.aniTimer = window.setTimeout(this.gRef + ".scroll('"+deg+"','"+count+"')", this.y.minRes)
	var nt = (new Date()).getTime()
	var d = Math.round((nt - this.lastTime) / 1000 * this.speed)
	if (d > 0){
		var nx = d * this.fx + this.scrollLeft
		var ny = d * this.fy + this.scrollTop
		var xOut = (nx >= this.scrollLeft && nx >= this.stopH) || (nx <= this.scrollLeft && nx <= this.stopH)
		var yOut = (ny >= this.scrollTop && ny >= this.stopV) || (ny <= this.scrollTop && ny <= this.stopV)
		if (nt - this.lastTime != 0 && 
			    ((this.fx == 0 && this.fy == 0) || 
			    (this.fy == 0 && xOut) || 
			    (this.fx == 0 && yOut) || 
			    (this.fx != 0 && this.fy != 0 && 
			    xOut && yOut))) {
			this.jumpTo(this.stopH, this.stopV)
			this.endScroll()
		}
		else {
			this.jumpTo(nx, ny)
			this.lastTime = nt
		}
	
	//  now we also update dragger position:
	if(deg=='90' || deg=='270')	{
	    if (this.scrollH != 0) theThumbV[count].style.top = parseInt(((theThumbV[count].maxY-theThumbV[count].minY) * this.scrollTop/this.scrollH)+theThumbV[count].minY) + "px"; //ok nomes up
    }
  //  if(deg=='270')	theThumbV[count].style.top = parseInt(((theThumbV[count].maxY-theThumbV[count].minY) * this.scrollTop/this.stopV)  +theThumbV[count].minY) + "px"; //ok nomes down

    //  if(deg=='0')	theThumbH[count].style.left = parseInt(((theThumbH[count].maxX-theThumbH[count].minX)* this.scrollLeft/this.stopH)  +theThumbH[count].minX) + "px"; //ok nomes right
    if(deg=='180' || deg=='0')	{
        if (this.scrollW != 0) theThumbH[count].style.left = parseInt(((theThumbH[count].maxX-theThumbH[count].minX)* this.scrollLeft/this.scrollW)+theThumbH[count].minX) + "px"; //ok nomes left
    }
   
    }

}

function ypSimpleScroll(id, left, top, width, height, speed) {
	var y = this.y = ypSimpleScroll
	if (document.layers && !y.ns4) history.go(0)
	if (y.ie || y.ns4 || y.dom) {
		this.loaded = false
		this.id = id
		this.origSpeed = speed
		this.aniTimer = false
		this.op = ""
		this.lastTime = 0
		this.clipH = height
		this.clipW = width
		this.scrollTop = 0
		this.scrollLeft = 0
		this.gRef = "ypSimpleScroll_"+id
		eval(this.gRef+"=this")
		var d = document;
/*	    d.write('<style type="text/css">')
	    d.write('#' + this.id + 'Container { left:' + left + 'px; top:' + top + 'px; width:' + width + 'px; height:' + height + 'px;  overflow:hidden; }')
	    d.write('#' + this.id + 'Container, #' + this.id + 'Content { position:absolute; }')
    	d.write('#' + this.id + 'Content { left:' + (-this.scrollLeft) + 'px; top:' + (-this.scrollTop) + 'px; }')    //d.write('#' + this.id + 'Content { left:' + (-this.scrollLeft) + 'px; top:' + (-this.scrollTop) + 'px; width:' + width + 'px; }')
	    d.write('</style>')
*/	
	    objContainer = d.getElementById(this.id + 'Container');
	    objContent = d.getElementById(this.id + 'Content');

	    if (objContainer){
	        oCner = objContainer.style;
	        oCner.left = left + 'px';
	        oCner.top = top + 'px';
	        oCner.width = width + 'px';
	        oCner.height = height + 'px';
	    //    oCner.overflow = 'hidden';
	    //    oCner.position = 'absolute';
	    }
	    if (objContent){
	        oCtent = objContent.style;
	        oCtent.left = (-this.scrollLeft) + 'px'; 
	        oCtent.top =  (-this.scrollTop) + 'px'; 
	    //    oCtent.position = 'absolute';
	    }
	}
}

ypSimpleScroll.prototype.load = function() {
	var d, lyrId1, lyrId2
	d = document
	lyrId1 = this.id + "Container"
	lyrId2 = this.id + "Content"
	this.container = this.y.dom ? d.getElementById(lyrId1) : this.y.ie ? d.all[lyrId1] : d.layers[lyrId1]
	this.content = obj2 = this.y.ns4 ? this.container.layers[lyrId2] : this.y.ie ? d.all[lyrId2] : d.getElementById(lyrId2)
	this.docH = Math.max(this.y.ns4 ? this.content.document.height : this.content.offsetHeight, this.clipH)
	this.docW = Math.max(this.y.ns4 ? this.content.document.width : this.content.offsetWidth, this.clipW)
	this.scrollH = this.docH - this.clipH   
	this.scrollW = this.docW - this.clipW
	this.loaded = true
	this.scrollLeft = Math.max(Math.min(this.scrollLeft, this.scrollW),0)
	this.scrollTop = Math.max(Math.min(this.scrollTop, this.scrollH),0)
	this.jumpTo(this.scrollLeft, this.scrollTop)
}