rem:  this.element.style.left = parseInt(x, 10) + "px"; this.element.style.top = parseInt(y, 10) + "px"; this.syncPosition(); 
add:  this.cfg.setProperty("xy", [parseInt(x, 10), parseInt(y, 10)]); 
context: YAHOO.widget.Overlay.prototype.center = function() {	var scrollX = document.documentElement.scrollLeft || document.body.scrollLeft;	var scrollY = document.documentElement.scrollTop || document.body.scrollTop;	var viewPortWidth = YAHOO.util.Dom.getClientWidth();	var viewPortHeight = YAHOO.util.Dom.getClientHeight();	var elementWidth = this.element.offsetWidth;	var elementHeight = this.element.offsetHeight;	var x = (viewPortWidth / 2) - (elementWidth / 2) + scrollX;	var y = (viewPortHeight / 2) - (elementHeight / 2) + scrollY;		this.element.style.left = parseInt(x, 10) + "px";	this.element.style.top = parseInt(y, 10) + "px";	this.syncPosition();	this.cfg.refireEvent("iframe");};
meta: 4707	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/4707/50c3492c4c3c825dbd3401e134a19ed46799c456/container-debug.js/clean/www/resources/yui/container/container-debug.js