//floatbox.js
function getElement(aID)
{
  return (document.getElementById) ? document.getElementById(aID)
                                   : document.all[aID];
}
function getAllElement()
{
  return (document.getElementsByTagName) ? document.getElementsByTagName("*")
										 : document.all;
}
function getParentElement(elm)
{
	return (elm.parentElement) ? elm.parentElement : elm.parentNode
}
var Drag={
	"obj":null,
	"init":function(a, aRoot){
			a.onmousedown=Drag.start;
			a.root = aRoot;
			if(isNaN(parseInt(a.root.style.left)))a.root.style.left="0px";
			if(isNaN(parseInt(a.root.style.top)))a.root.style.top="0px";
			a.root.onDragStart=new Function();
			a.root.onDragEnd=new Function();
			a.root.onDrag=new Function();
	},
	"start":function(a){	
			var b=Drag.obj=this;
			a=Drag.fixE(a);
			var c=parseInt(b.root.style.top);
			var d=parseInt(b.root.style.left);
			b.root.onDragStart(d,c,a.clientX,a.clientY);
			b.lastMouseX=a.clientX;
			b.lastMouseY=a.clientY;
			document.onmousemove=Drag.drag;
			document.onmouseup=Drag.end;
			return false;
	},	
	"drag":function(a){
			a=Drag.fixE(a);
			var b=Drag.obj;
			var c=a.clientY;
			var d=a.clientX;
			var e=parseInt(b.root.style.top);
			var f=parseInt(b.root.style.left);
			var h,g;
			h=f+d-b.lastMouseX;
			g=e+c-b.lastMouseY;
			b.root.style.left=h+"px";
			b.root.style.top=g+"px";			
			b.lastMouseX=d;
			b.lastMouseY=c;
			b.root.onDrag(h,g,a.clientX,a.clientY);
			return false;
	},
	"end":function(){			
			document.onmousemove=null;
			document.onmouseup=null;
			Drag.obj.root.onDragEnd(parseInt(Drag.obj.root.style.left),parseInt(Drag.obj.root.style.top));
			Drag.obj=null;
	},
	"fixE":function(a){
			if(typeof a=="undefined")a=window.event;
			if(typeof a.layerX=="undefined")a.layerX=a.offsetX;
			if(typeof a.layerY=="undefined")a.layerY=a.offsetY;
			return a;
	}
};
function addLightboxMarkup() {
	bod			= document.getElementsByTagName('body')[0];
	overlay		= document.createElement('div');
	overlay.id	= 'overlay';
	bod.appendChild(overlay);
}
function hideSelect(visibility){
	selects = document.getElementsByTagName('select');
	for(i = 0; i < selects.length; i++){
		if(selects[i].id != "nohidden")
			selects[i].style.visibility = visibility;
	}
}
function preIE(height, overflow){
	bod = document.getElementsByTagName('body')[0];
	bod.style.height = height;
	bod.style.overflow = overflow;
 
	htm = document.getElementsByTagName('html')[0];
	htm.style.height = height;
	htm.style.overflow = overflow;
}
function getRange() {
	var top     = document.documentElement.scrollTop;
	var left    = document.documentElement.scrollLeft;
	var height  = document.documentElement.clientHeight;
	var width   = document.documentElement.clientWidth;
	
	if (top==0 && left==0 && height==0 && width==0) {
		top     = document.body.scrollTop;
		left    = document.body.scrollLeft;
		height  = document.body.clientHeight;
		width   = document.body.clientWidth;
	}
	
	return  {top:top  ,left:left ,height:height ,width:width } ;
}
function showBox(e){
	if(typeof e=="undefined")e=window.event;

	hideSelect("hidden");
	overlay.style.display="block";
	WfloatBox.style.display="block";

	var range=getRange();
	WfloatBox.style.top=(range.top+WfloatBox.oy) +"px";
	WfloatBox.style.left=(range.left+WfloatBox.ox) +"px";
	window.onscroll=onbodyscroll;
}

function onbodyscroll(){
	var range=getRange();
	WfloatBox.style.top=(range.top+WfloatBox.oy) +"px";
	WfloatBox.style.left=(range.left+WfloatBox.ox) +"px";
}

function closeBox(){
	hideSelect("visible");
	overlay.style.display="none";
	WfloatBox.style.display="none";
}

function initbox(){	
	var range=getRange();
	WfloatBox=getElement("floatBox");
	if(!WfloatBox) return;
	WfloatBox.ox=(range.width-400)/2;
	WfloatBox.oy=(range.height-300)/2;

	Drag.init(getElement("draghead"),WfloatBox);

	WfloatBox.onDragEnd=function(x,y){
		WfloatBox.ox=x-getRange().left;
		WfloatBox.oy=y-getRange().top;
	}

	addLightboxMarkup();
	overlay.style.height=document.body.clientHeight;

}
window.onload=initbox;