/* 
Open DIV popup for instructions to play video
divID = popup DIV
vidlinkID = link executing script (to find position of link to position DIV
fromLeft = desired starting offset from left
fromTop = desired starting offset from top 
*/
function openVideoBox(divID,vidlinkID,fromLeft,fromTop) {
	var offsetPsearch = document.getElementById(vidlinkID);
	while (offsetPsearch) {
		fromLeft += offsetPsearch.offsetLeft;
		fromTop += offsetPsearch.offsetTop;
		offsetPsearch = offsetPsearch.offsetParent;
	}
	// correct for MacIE body margin
		if (navigator.userAgent.indexOf("Mac") != -1 && typeof document.body.leftMargin != "undefined") {
		fromLeft += document.body.leftMargin;
		fromTop += document.body.topMargin;
	}

	document.getElementById(divID).style.display = "block";
	document.getElementById(divID).style.left = fromLeft + "px";
	document.getElementById(divID).style.top = fromTop + "px";
}

function closeVideoBox(divID) {
	document.getElementById(divID).style.display = "none";
}

/* voidlinks() - Sets values of all href attributes on video links to run a dummy function so that only the onclick event handler is run when user clicks on video link. Since the target is assigned to 'top', the dummy function (launchVideo) must be defined in the parent document (archives_videos.htm) */
function voidLinks() {
var vidlinkIDArray = new Array('vidlinkID_01_img','vidlinkID_01','vidlinkID_02_img','vidlinkID_02','vidlinkID_03_img','vidlinkID_03','vidlinkID_04_img','vidlinkID_04','vidlinkID_05_img','vidlinkID_05');
	for (var i=0; i<vidlinkIDArray.length; i++) {
	document.getElementById(vidlinkIDArray[i]).href = "javascript:launchVideo()";
	document.getElementById(vidlinkIDArray[i]).target = "_top";
	document.getElementById(vidlinkIDArray[i]).title = "Click here to open the video information box...";
	}
} 

function loadOrphan() {
	if (top.location == self.location) {
	location.replace("archives_videos.htm");
	}
}