//start div popup
function popup_div(obj_id)
{
	var obj = document.getElementById(obj_id);
	if(obj!=null)
	{
		//set_postion(obj);
		//obj.style.visibility = (obj.style.visibility == 'visible') ? 'hidden' : 'visible';			

		set_postion(obj);
		if(obj.style.visibility == 'visible')
		{
			//hide the pop up
			obj.style.visibility = 'hidden';
			hideAlertLayer();
		}
		else
		{
			//show the pop up
			showAlertLayer();
			obj.style.visibility = 'visible';
			obj.style.zIndex = 101;			
		}

	}
	else
	{
		alert(obj_id + ' popup is null');
	}
	return false;
}
function set_postion(obj)
{		
	var div_width = obj.offsetWidth		
	var div_height = obj.offsetHeight;		

	var theLeft = 0, theTop =0;
	if(screen.width)
	{		
		var theLeft = 0;
		var theTop = 0;
		var isMozilla = document.getElementById&&!document.all;
		if(isMozilla)
		{
			theLeft = (window.innerWidth - div_width) / 2;;
			theTop = (window.innerHeight - div_height) / 4;		
		}
		else
		{
			theLeft = (document.body.offsetWidth - div_width) / 2;
			theTop = (document.body.offsetHeight - div_height) / 4;	
		}
		
	}
	if (theLeft < 0) theLeft = 0;
	if (theTop < 0) theTop = 0;	
	theTop = 80;
	obj.style.left = theLeft + 'px' ;
	obj.style.top = theTop + 'px' ;	
}
function popup_postion_div(obj_id, theLeft, theTop)
{
	var obj = document.getElementById(obj_id);
	if(obj!=null)
	{
		if(theLeft > 0 && theTop > 0)
		{
			obj.style.left = theLeft + 'px' ;
			obj.style.top = theTop + 'px' ;	
		}
		obj.style.visibility = (obj.style.visibility == 'visible') ? 'hidden' : 'visible';			
	}
	else
	{
		alert(obj_id + ' popup is null');
	}
	return false;
}

//start popup window
function OpenBox(winWidth, winHeight, fileSrc, scrollbars)
{		
	if(screen.width)
	{
		var winl = (screen.width - winWidth) / 2;
		var wint = (screen.height - winHeight) / 2;
	}
	else
	{
		winl = 0; wint =0;
	}
	if (winl < 0) winl = 0;
	if (wint < 0) wint = 0;	
	var props = 'top='+wint+',left='+winl+',toolbar=no,location=no,directories=no,status=yes,menubar=no,scrollbars='+scrollbars+',resizable=no,width='+winWidth+',height='+ winHeight;		
	window.open(fileSrc, 'FullScreen', props);			
}
function getPageSize()
{
	arrayPageSize = new Array(document.body.clientWidth,document.body.clientHeight) 
	return arrayPageSize;
}

function showAlertLayer()
{
	var arrayPageSize = getPageSize();

	// setup the dividers
	var BodyObject = document.getElementsByTagName("body").item(0);	

	// setup bg alert layer	
	var OverlayObject = document.getElementById('da_overlay');
	if (!OverlayObject)
		OverlayObject = document.createElement("div");
	
	OverlayObject.setAttribute('id','da_overlay');
	OverlayObject.style.width = arrayPageSize[0] + "px";
	OverlayObject.style.height = (arrayPageSize[1]) + 'px';
	OverlayObject.style.left = '0px';
	OverlayObject.style.top = '0px';
	OverlayObject.style.position = "absolute";
	OverlayObject.style.backgroundColor = "#ffffff";
	OverlayObject.style.zIndex = 100;
	OverlayObject.style.filter = "alpha(opacity=65)";
	OverlayObject.style.mozOpacity = ".65";
	OverlayObject.style.opacity = ".65";
	OverlayObject.style.display = "block";

	// setup content alert layer
	
	BodyObject.appendChild(OverlayObject);
	
}		

function hideAlertLayer()
{
	var OverlayObject = document.getElementById('da_overlay');
	if(OverlayObject)
	{
		OverlayObject.style.width = "0px";
		OverlayObject.style.height = "0px";
		OverlayObject.style.left = '0px';
		OverlayObject.style.top = '0px';
		OverlayObject.style.backgroundColor = "#000000";
		OverlayObject.style.zindex = "0";
		OverlayObject.style.filter = "alpha(opacity=0)";
		OverlayObject.style.mozOpacity = ".0";
		OverlayObject.style.opacity = ".0";
		OverlayObject.style.display = "block";
	}
}