/************************************
ticker.js
************************************/

var intTotalItems = 0;
var intLastNumber = 0;
var objDiv, objContentDiv;
var tickerDelay = 3000;

function startTicker(timeoutms) {
	objDiv = document.getElementById("contentscroller");
	objContentDiv = document.getElementById("displayedcontent");

         tickerDelay = timeoutms;

	if(IE7) {
	         var objLI = document.getElementById("displayedcontent").style;
	         //objLI.backgroundColor = "#D20000";
                  objLI.color = "#ffffff";
                  objLI.filter="progid:DXImageTransform.Microsoft.Alpha(opacity=100);";
	}

	if (objDiv && objContentDiv) {
		/* Loop through the contentscroller UL, give each LI
	       an ID and save the list in an array */
		for (var i = 0; i < objDiv.childNodes.length; i++) {
			var item = objDiv.childNodes[i];
			if (item.nodeName.toLowerCase() == "li" && item.id == "") {
				item.setAttribute("id", intTotalItems);
				intTotalItems++;
			}
		}

		// Add first load of content
		objCurrentContent = document.getElementById(intLastNumber);
		if (objCurrentContent)
			objContentDiv.innerHTML = objCurrentContent.innerHTML;
		intLastNumber++;

		// And change it in ten seconds
		setTimeout("changeContent()", tickerDelay);
	}
}

// Display the next content snippet in the list
function changeContent() {
	objCurrentContent = document.getElementById(intLastNumber);
	startOpacityChange('displayedcontent', 100, 0, 1000);

	setTimeout("startOpacityChange('displayedcontent', 0, 100, 1000)", 1000);
	if (document.getElementById('objCurrentContent')) {
		setTimeout("document.getElementById('displayedcontent').innerHTML = objCurrentContent.innerHTML;", 1005);
	}

	if (intLastNumber == (intTotalItems - 1))
		intLastNumber = 0;
	else
		intLastNumber++;

	// Now do it all again (in ten seconds time)!
	setTimeout("changeContent();", tickerDelay);
}

function startOpacityChange(strId, intOpacStart, intOpacEnd, intMillisec) {
    var intSpeed = Math.round(intMillisec / 100);
    var intTimer = 0;

    if(intOpacStart > intOpacEnd) {
        for(i = intOpacStart; i >= intOpacEnd; i--) {
            setTimeout("changeOpacity(" + i + ",'" + strId + "')",(intTimer * intSpeed));
            intTimer++;
        }
    }
    else if(intOpacStart < intOpacEnd) {
        for(i = intOpacStart; i <= intOpacEnd; i++) {
            setTimeout("changeOpacity(" + i + ",'" + strId + "')",(intTimer * intSpeed));
            intTimer++;
        }
    }
}

/* Change the opacity of a div (allowing for different browsers) */
function changeOpacity(intOpacity, id) {
         var objLI = document.getElementById(id).style;
	if(!IE7) {
		objLI.opacity = (intOpacity / 100);
		objLI.MozOpacity = (intOpacity / 100);
		objLI.KhtmlOpacity = (intOpacity / 100);
		objLI.filter = "alpha(opacity=" + intOpacity + ")";
	}
         else {
                 //objLI="filter:progid:DXImageTransform.Microsoft.Alpha(opacity="+ intOpacity + ");";
                 //objLI.removeAttribute('filter');
                 //objLI.position = "relative;";
                 //objLI.backgroundColor = "#D20000";
                 //objLI.color = "#ffffff";
                 objLI.filter="progid:DXImageTransform.Microsoft.Alpha(opacity="+ intOpacity + ");";

         }
}

/* Detect IE7 to disable text fade */
var IE7 = false;
if(navigator.userAgent.indexOf("MSIE 7") != -1) IE7 = true;