function createPopup(elref,text){
	var content = document.getElementById('popupcontent');
	content.innerHTML=text;

	var pos=cumulativeOffset(elref);
	var container = document.getElementById('popup');
	container.style.left=pos[0]+'px'
	container.style.top=pos[1]-175+'px'
	container.style.display = 'block';
	return false;
}

function closePopup(){
	document.getElementById('popup').style.display='none';
}

function cumulativeOffset(element) {
	var valueT = 0, valueL = 0;
	do {
		valueT += element.offsetTop  || 0;
		valueL += element.offsetLeft || 0;
		element = element.offsetParent;
	} while (element);
	return [valueL, valueT];
}