// Contains functions for enabling information pop-up panels.
var lastPopupId;
var lastPopupClickerId;
var lastPDFViewerVis;

function findPosX(obj) {
	var curleft = 0;
	if (obj.offsetParent) {
	    do {
	        curleft += obj.offsetLeft;
		    if (obj.offsetParent) {
		        curleft -= obj.scrollLeft;
		    }
		    if ((obj.offsetParent != obj.parentNode) && (obj.parentNode.scrollLeft != 0)) {
		        //Firefox does not honor div tags in offsetParent chain! Punks!
		        curleft -= obj.parentNode.scrollLeft;
		    }
	    } 
	    while (obj = obj.offsetParent);
	}
	return curleft;
}

function findPosY(obj) {
	var curtop = 0;
	if (obj.offsetParent) {
	    do {
	        curtop += obj.offsetTop;
		    if (obj.offsetParent) {
		        curtop -= obj.scrollTop;
		    }
		    if ((obj.offsetParent != obj.parentNode) && (obj.parentNode.scrollTop != 0)) {
		        //Firefox does not honor div tags in offsetParent chain! Punks!
		        curtop -= obj.parentNode.scrollTop;
		    }
	    }
	    while (obj = obj.offsetParent);
	}
	return curtop;
}

function showhidePopup (id, clickerId) {
    var obj;
    var objCI;
    var objLast;
    var objCILast;
    obj = document.getElementById(id);
    objCI = document.getElementById(clickerId);
    if (obj && objCI) {
        if (obj.style.visibility=='hidden') {
            obj.style.visibility='visible';
            obj.style.top=findPosY(objCI);
            obj.style.left=findPosX(objCI) + 16;
            objCI.src='images/collapseleft.jpg';
            objLast = document.getElementById(lastPopupId);
            objCILast = document.getElementById(lastPopupClickerId);
            if ((objLast && objCILast) && (objLast!==obj)) {
                lastPopupId='';
                lastPopupClickerId='';
                if (objLast.style.visibility=='visible') {
                    showhidePopup(objLast.id,objCILast.id);
                }
            }
            lastPopupId = id;
            lastPopupClickerId = clickerId;
        }
        else {
            obj.style.visibility='hidden';
            obj.style.top=findPosY(objCI);
            obj.style.left=findPosX(objCI) + 16;
            objCI.src='images/collapseright.jpg';
            lastPopupId='';
            lastPopupClickerId='';
        }
        showhidePDFViewer(obj);
    }
}

function showhidePDFViewer (obj) {
    var objPDFViewerPanel;
    
    objPDFViewerPanel = document.getElementById('ctl00_MainContent_PDFViewerPanel');
    
    if(objPDFViewerPanel) {
        if (obj.style.visibility=='visible') {
            if((objPDFViewerPanel.style.visibility=='visible') || (objPDFViewerPanel.style.visibility=='')) {
                lastPDFViewerVis=objPDFViewerPanel.style.visibility;
                objPDFViewerPanel.style.visibility='hidden';
            }
        }
        else {
            if((objPDFViewerPanel.style.visibility=='hidden')) {
                objPDFViewerPanel.style.visibility=lastPDFViewerVis;
            }
        }
    }
}