function toggleDiv(div){
	if(document.getElementById(div).style.display == "none"){
		document.getElementById(div).style.display = "block";
	}else{
		document.getElementById(div).style.display = "none";
	}
}

function popUp(url,width,height,top,left){
	var top = (window.screen.height/100) * top;
	var left = (window.screen.width/100) * left;
	window.open(url,"","width="+width+",height="+height+",top="+top+",left="+left+",resizeable=no,location=no");
	return;
}

function goBack(){window.history.back(-1);}