/*

		dw_scroll.js

		requires dw_core.js

		last revised: March 2003 

		Contains functions for "scrolling layer content"

		i.e., for onmouseover and onclick scrolling

    

    Functions now included for glide-scroll onclick

    which requires dw_slide.js

    

		This code is from Dynamic Web Coding 

    at http://www.dyn-web.com/

    Copyright 2001-3 by Sharon Paine 

    See Terms of Use at http://www.dyn-web.com/bus/terms.html

    Permission granted to use this code 

    as long as this entire notice is included.		

*/



///////////////////////////////////////////////////////////////////////////////

//  NOTE: dynObj in dw_core.js now used for wndo and scrolling content objects.

//  Argument for creating wndo objects:	id of wndo div.

//	Arguments for creating content (done in loadScrLyr function):

//	id of content div, id of html element that contains content. 

//	NOTE: Netscape 6 needs that html container and its id 

//	in order to get width for horizontal scrolling.

//	If only using vertical scrolling, that extra container

//	is not necessary.

//	You can set left/top in style sheet or pass it to constructor.

//	Width/height (and clip) need to be set in style sheet

//	(opera and ns4 can't reflow content)

///////////////////////////////////////////////////////////////////////////////



var scrTimer = 20; // interval between calls to scroll onmouseover

if (navigator.userAgent.indexOf("Gecko")>-1){

   isDom = true

   window.onresize = rePosGecko;

}

else{

   isDom = false

}



function stopScroll(num) {

  if (pgLoaded && wndo[num]) {

  	clearTimeout(wndo[num].scrTmId);

  	wndo[num].scrTmId = 0;

  }

}



/////////////////////////////////////////////////////////////////////

// loadScrLyr function: loads scrollable content div(s)

//	arg's: wndo array number, id of scrollable div,

//	and id of table or other html element that contains div content. 

//	NOTE: Ns6+/Mozilla need that html container and its id 

//	in order to get width for horizontal scrolling.

//	If only using vertical scrolling, that extra container

//	is not necessary.

/////////////////////////////////////////////////////////////////////

function loadScrLyr(num,lyr,id) {

	if (!pgLoaded) return; // avoid not loaded errors

	if (typeof wndo[num].cnt != "undefined") wndo[num].cnt.hide();

  wndo[num].scrTmId = 0;

	wndo[num].cnt = new dynObj(lyr);

  // mainly for ns6+/mozilla when scrolling horizontally

  if (id && document.getElementById) 

    wndo[num].cnt.width = document.getElementById(id).offsetWidth;

	wndo[num].cnt.show();

	wndo[num].cnt.shiftTo(0,0);	// restore top/left to 0 

	wndo[num].maxX = wndo[num].cnt.width - wndo[num].width;

	wndo[num].maxY = wndo[num].cnt.height - wndo[num].height

  //if (isDom) wndo[num].maxY+=200

} 



// These functions are for onmouseover scrolling

function inchDown(num,inc) {

	if (!pgLoaded||!wndo[num]) return;

	if (wndo[num].scrTmId) clearTimeout(wndo[num].scrTmId);

	var y = parseInt(wndo[num].cnt.css.top);

	if (y>-wndo[num].maxY) { 

    if ((y-inc)>(-wndo[num].maxY)) wndo[num].cnt.shiftBy(0,-inc);

		else wndo[num].cnt.shiftBy(0,-(wndo[num].maxY-Math.abs(y)));

		wndo[num].scrTmId = setTimeout("inchDown("+num+","+inc+")",scrTimer);	

	}

}



function inchUp(num,inc) {

	if (!pgLoaded||!wndo[num]) return;

	if (wndo[num].scrTmId) clearTimeout(wndo[num].scrTmId);

	var y = parseInt(wndo[num].cnt.css.top);

	if (y<0) { 

    if ((y+inc)<=0) wndo[num].cnt.shiftBy(0,inc); 

		else wndo[num].cnt.shiftBy(0,-y);

		wndo[num].scrTmId = setTimeout("inchUp("+num+","+inc+")",scrTimer);	

  }

}



function inchRight(num,inc) {

	if (!pgLoaded||!wndo[num]) return;

	if (wndo[num].scrTmId) clearTimeout(wndo[num].scrTmId);

	var x = parseInt(wndo[num].cnt.css.left);	

	if (x>-wndo[num].maxX) { 

    if ((x-inc)>(-wndo[num].maxX)) wndo[num].cnt.shiftBy(-inc,0);

		else wndo[num].cnt.shiftBy(-(wndo[num].maxX-Math.abs(x)),0);

		wndo[num].scrTmId = setTimeout("inchRight("+num+","+inc+")",scrTimer);	

	}

}



function inchLeft(num,inc) {

	if (!pgLoaded||!wndo[num]) return;

	if (wndo[num].scrTmId) clearTimeout(wndo[num].scrTmId);

	var x = parseInt(wndo[num].cnt.css.left);

	if (x<0) { 

    if ((x+inc)<=0) wndo[num].cnt.shiftBy(inc,0); 

		else wndo[num].cnt.shiftBy(-x,0); 

		wndo[num].scrTmId = setTimeout("inchLeft("+num+","+inc+")",scrTimer);	

  }

}





// These functions are for onclick scrolling

function jumpDown(num,jump) {

	if (!pgLoaded||!wndo[num]) return;

	var y = parseInt(wndo[num].cnt.css.top);

	if (y>(-wndo[num].maxY)) { 

		if ((y-jump)>(-wndo[num].maxY)) wndo[num].cnt.shiftBy(0,-jump);

		else wndo[num].cnt.shiftBy(0,-(wndo[num].maxY-Math.abs(y)));	

  }

}



function jumpUp(num,jump) {

	if (!pgLoaded||!wndo[num]) return;

	var y = parseInt(wndo[num].cnt.css.top);

	if (y<0) { 

		if ((y+jump)<=0) wndo[num].cnt.shiftBy(0,jump); 

		else wndo[num].cnt.shiftBy(0,-y); 

	}

}



function jumpRight(num,jump) {

	if (!pgLoaded||!wndo[num]) return;

	var x = parseInt(wndo[num].cnt.css.left);

	if (x>(-wndo[num].maxX)) {

		if ((x-jump)>(-wndo[num].maxX)) wndo[num].cnt.shiftBy(-jump,0);

		else wndo[num].cnt.shiftBy(-(wndo[num].maxX-Math.abs(x)),0);	

  }

}



function jumpLeft(num,jump) {

	if (!pgLoaded||!wndo[num]) return;

	var x = parseInt(wndo[num].cnt.css.left);

	if (x<0) { 

		if ((x+jump)<=0) wndo[num].cnt.shiftBy(jump,0); 

		else wndo[num].cnt.shiftBy(-x,0); 

	}

}



// Functions for glide-scrolling onclick  

// NOTE: dw_slide.js needed for glide-scroll

function glideRight(num,dist) {

	if (!pgLoaded||!wndo[num]) return;

	var x = parseInt(wndo[num].cnt.css.left);

	if (x>(-wndo[num].maxX)) {

		if ((x-dist)>(-wndo[num].maxX)) wndo[num].cnt.slideBy(-dist,0,500);

		else wndo[num].cnt.slideBy(-(wndo[num].maxX-Math.abs(x)),0,500);	

  }

}



function glideLeft(num,dist) {

	if (!pgLoaded||!wndo[num]) return;

	var x = parseInt(wndo[num].cnt.css.left);

	if (x<0) { 

		if ((x+dist)<=0) wndo[num].cnt.slideBy(dist,0,500); 

		else wndo[num].cnt.slideBy(-x,0,500); 

	}

}



function glideDown(num,dist) {

	if (!pgLoaded||!wndo[num]) return;

	var y = parseInt(wndo[num].cnt.css.top);

	if (y>(-wndo[num].maxY)) { 

		if ((y-dist)>(-wndo[num].maxY)) wndo[num].cnt.slideBy(0,-dist,500);

		else wndo[num].cnt.slideBy(0,-(wndo[num].maxY-Math.abs(y)),500);	

  }

}



function glideUp(num,dist) {

	if (!pgLoaded||!wndo[num]) return;

	var y = parseInt(wndo[num].cnt.css.top);

	if (y<0) { 

		if ((y+dist)<=0) wndo[num].cnt.slideBy(0,dist,500); 

		else wndo[num].cnt.slideBy(0,-y,500); 

	}

}



//----------------------- Added from external pages in package



var pgLoaded = false;

var wndo = new Array();	// "window(s)" for scrollable content



function initScrLyr(holdName,wnName,lyrName) {

	pgLoaded = true;

	if (document.all && !document.all(holdName)) return

	else if (document.getElementById && !document.getElementById(holdName)) return

	

  var wSTR = '<table border="0" cellpadding="0" cellspacing="0" height="'+scroll_params.sHeight+'" width=31>'+

     '<tr><td align=right valign="top" style="padding: 0px 0px 0px 0px"><a href="javascript://" onmousedown="inchUp(0,12);return true" onmouseup="inchUp(0,4);return true" onmouseover="inchUp(0,4); window.status=\'Hover here to scroll up.\'; return true" onmouseout="stopScroll(0); window.status=\'\'; return true"><img src="images/up.gif" width="9" height="13" alt="" border="0"></a></td></tr>'+

     '<tr><td align=right style="padding: 0px 0px 0px 0px"><table cellpadding=0 cellspacing=0 width=12 border=0><tr><td></td></tr></table></td></tr>'+

     '<tr><td align=right style="padding: 0px 0px 0px 0px" valign="bottom"><a href="javascript://" onmousedown="inchDown(0,12); return true" onmouseup="inchDown(0,4);return true" onmouseover="inchDown(0,4); window.status=\'Hover here to scroll down.\'; return true" onmouseout="stopScroll(0); window.status=\'\'"><img src="images/down.gif" width="9" height="13" alt="" border="0"></a></td>'+

     '</tr></table>'

	

	if (document.all && document.all("scrolllyr").offsetHeight <= scroll_params.sHeight){

	   document.all("scrolltd").removeNode(true)

	}

	else if (document.all){

	   document.all("scrolltd").innerHTML = wSTR

	}

	else if (isDom && document.getElementById("scrolllyr").offsetHeight <= scroll_params.sHeight){

	   document.getElementById("scrolltd").parentNode.removeChild(document.getElementById("scrolltd"))

	}

	else if (isDom){

	   document.getElementById("scrolltd").innerHTML = wSTR

	}



  // creat scrollable content area

	// arg: id of div containing scrollable div(s)

	wndo[wndo.length] = new dynObj(wnName);

	// load scrolling content

	// arg's: array number of wndo, id of scroll div

	loadScrLyr(wndo.length-1,lyrName);



	// remove layers from table for ns6+/mozilla (overflow/clip bug?)

	if (navigator.userAgent.indexOf("Gecko")>-1) {

    for (var i=0; i<wndo.length; i++) {

			if (wndo[i].el.parentNode.id.indexOf(holdName)!=-1) {

				var holderId = wndo[i].el.parentNode.id;

				wndo[i].holder = document.getElementById(holderId);

				var scrWn = wndo[i].holder.removeChild(wndo[i].el);

				document.body.appendChild(wndo[i].el);

				wndo[i].css.zIndex = 1000;

				var y = wndo[i].holder.offsetTop;

				var x = wndo[i].holder.offsetLeft;

				wndo[i].shiftTo(x,y);

			}

  	}

  }

  

}



// ns6+/mozilla need to reposition layers onresize

function rePosGecko() {

  for (var i=0; i<wndo.length; i++) {

    var y = wndo[i].holder.offsetTop;

		var x = wndo[i].holder.offsetLeft;

		wndo[i].shiftTo(x,y);

  }

}



if (navigator.userAgent.indexOf("Gecko")>-1) window.onresize = rePosGecko;



function setScrollHead(sWidth,sHeight,imgDir){

var wSTR = '<style type="text/css">\n'+

  '<!--\n'+

  '#scrollhold{ position:relative; overflow:hidden; width:'+sWidth+'px; height:'+sHeight+'px; z-index:100; }\n'+

  '#scrollwn{ position:absolute; left:0px; top:0px; width:'+sWidth+'px; height:'+sHeight+'px; '+

  'clip:rect(0px, '+sWidth+'px, '+sHeight+'px, 0px); overflow:hidden;	z-index:1; }\n'+

  '#scrolllyr{ position:absolute; visibility:hidden; left:0px; top:0px; z-index:1; }\n'+

  '-->\n'+

  '</style>\n'+

  '<table width="'+(sWidth+12)+' "height="'+sHeight+'" cellspacing="0" cellpadding="0" border="0">'+

	'<tr>'+

	'<td valign="top" width="100%" style="padding: 0px 0px 0px 0px">'+

	'<div id="scrollhold">'+

	'<div id="scrollwn">'+

	'<div id="scrolllyr">'

  

 document.write(wSTR)

 scroll_params = {sWidth:sWidth,sHeight:sHeight,imgDir:imgDir}

}



function setScrollFoot(){

    document.write('</div></div></div></td><td align=right style="padding: 0px 0px 0px 0px" id=scrolltd>'+

                  '</td></tr></table>')



}