var isIE = false;
var isNS = false;

if (navigator.appName.indexOf("Microsoft") != -1 )
	isIE = true;
else if (navigator.appName.indexOf("Netscape") != -1 )
	isNS = true;
else
	isIE = true;

var active = new Image();
active.src = "images/arrow_anim.gif";
var passive = new Image();
passive.src = "images/shim.gif";
var active_flip = new Image();
active_flip.src = "images/arrow_anim2.gif";

var flip = 0;

function activate(imageName1,imageName2,flip)
{
	if(isNS)
	{
		var temp = "img" + imageName1 + "_" + imageName2;
		if(flip == 1) {
			document.images[temp].src = active_flip.src;
		}
		else {
			document.images[temp].src = active.src;
		}
	}
	else
	{
		var temp = eval("img" + imageName1 + "_" + imageName2);
		if(eval(flip) == 1) {
			temp.src = active_flip.src;
		}
		else {
			temp.src = active.src;
		}
	}
}

function deactivate(imageName1,imageName2)
{
	if(isNS)
	{
		var temp = "img" + imageName1 + "_" + imageName2;
		if(flip == 1) {
			document.images[temp].src = passive_flip.src;
		}
		else {
			document.images[temp].src = passive.src;
		}

	}
	else
	{
		var temp = eval("img" + imageName1 + "_" + imageName2);
		temp.src = passive.src;

	}
}

function writeTeaser(teaser,strlen,search) {
	if (teaser.length == strlen) {
		var pos = teaser.lastIndexOf(' ');
		if (pos == -1) {
			teaser = teaser.slice(0,strlen-3);
		}
		else {
			teaser = teaser.slice(0,pos);

			for (var i = 0; i < pos; i++) {
				var temp = teaser.charAt(pos-i-1);
				if (temp != ' ' && temp != ',' && temp != '.' && temp != '?' && temp != '!' && temp != ':' && temp != ';') {
					break;
				}
			}
			teaser = teaser.slice(0,pos-i);
		}
		teaser = teaser + '...';
	}
	if (search) {
		return makeBold(teaser,search);
	}
	else {
		return teaser;
	}
}

function makeBold(teaser,search) {
	pattern = eval("/" + search + "/gi");
	teaser = teaser.replace(pattern,"<b>" + search + "</b>");
	return teaser;
}

function jumpMenu(targ,selObj,restore) {
	eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
	if (restore) selObj.selectedIndex=0;
}