function getInner(idx) {
	inner = '';
	inner += '    <br />\n';
    inner += '    <div id="left_banner_' +idx+ '">&nbsp;</div>\n';
	
	return inner;
}

function setLeftVBanners (htmlid, startheight, bannertype, cityid) {
	if (window.innerWidth) //if browser supports window.innerWidth
		dheight = window.innerHeight;
	else if(document.all) //else if browser supports document.all (IE 4+)
		dheight = document.body.clientHeight;

	//set defaults
	htmlid = (typeof argu == "undefined") ? "leftbanners" : htmlid;
	startheight = (typeof argu == "undefined") ? 600 : startheight;
	bannertype = (typeof argu == "undefined") ? "V" : bannertype;
	cityid = (typeof argu == "undefined") ? 0 : cityid;
	
	switch (bannertype) {
		case "V":
			bannerheight = 290;
			break;
		case "H": 
			bannerheight = 122;
			break;
		case "F":
			bannerheight = 250;
			break;
	}
	
	//set starting location
	dheight = dheight - startheight;
	
	if (dheight > startheight) {
		bnum = Math.floor(dheight / bannerheight);
		innerh = '';
		for (i=1; i<=bnum; i++) {
			innerh += getInner(i); //get and add inner html
		}
		//for (i=1; i<=bnum; i++) {
		//	getVerticalBanner("'left_banner_" + i +"'");
		//}
		
		document.getElementById(htmlid).innerHTML += innerh; //add inner html
		
		for (i=1; i<=bnum; i++) {
			document.getElementById("left_banner_"+i).innerHTML += getBanner("left_banner_"+i, bannertype, cityid);
		}
	}
}