var intCurrentBanIndex = 0;
var blogUrlHome = 'http://www.cnn.com/exchange/blogs/warpCNN/';
function cnnDrawWarpBanner() {
	/* to add a banner image, simply add to this array */
	var banner = new Array();
	banner[0] = '<a href="'+blogUrlHome+'"><img src="http://www.cnn.com/exchange/blogs/warpCNN/images/warp.bnr.jpg" width="770" height="120" alt="" border="0"></a>';
	banner[1] = '<a href="'+blogUrlHome+'"><img src="http://www.cnn.com/exchange/blogs/warpCNN/images/warp.bnr_02.jpg" width="770" height="120" alt="" border="0"></a>';
	banner[2] = '<a href="'+blogUrlHome+'"><img src="http://www.cnn.com/exchange/blogs/warpCNN/images/warp.bnr_03.jpg" width="770" height="120" alt="" border="0"></a>';
	banner[3] = '<a href="'+blogUrlHome+'"><img src="http://www.cnn.com/exchange/blogs/warpCNN/images/warp.bnr_04.jpg" width="770" height="120" alt="" border="0"></a>';
	banner[4] = '<a href="'+blogUrlHome+'"><img src="http://www.cnn.com/exchange/blogs/warpCNN/images/warp.bnr_05.jpg" width="770" height="120" alt="" border="0"></a>';

	
	/* no need to edit below here */
	var numBanners = banner.length;
	var intIndex = getRandomInteger( numBanners );
	// don't display the current one
	if(intCurrentBanIndex == intIndex) {
		while(intCurrentBanIndex == intIndex) {
			intIndex = getRandomInteger( numBanners );
		}
	}
	// draw the banner
	document.getElementById('cnnBlogWarpBanner').innerHTML = '';
	document.getElementById('cnnBlogWarpBanner').innerHTML =banner[intIndex];
	// set current for swap
	intCurrentBanIndex = intIndex;
}

function getRandomInteger( intMax ) {
	var random_num = Math.floor(Math.random()*intMax)+1;
	var intRandom = random_num - 1;
	return intRandom;
}

function cnnBlogWarpPopup( intItemNum ) {

	var postID = intItemNum;
	var popupURL = 'http://www.cnn.com/exchange/blogs/warpCNN/popup.html';
	window.open(popupURL+'?postID='+intItemNum+'&amp;isPopup=true', 'bloggerPopup', 'toolbar=0,scrollbars=1,location=0,statusbar=1,menubar=0,resizable=1,width=375,height=520');
	

}