//popup window
function openWindow(windowURL,windowName,windowWidth,windowHeight,scroll,center) {
	newWindow = window.open(windowURL,windowName,'width='+windowWidth+',height='+windowHeight+',toolbar=0,location=0,directories=0,status=0,menuBar=0,scrollbars='+scroll+',resizable=0');
	newWindow.focus(); 
   if (center) {
      newWindow.moveTo((screen.width-windowWidth)/2,(screen.height-windowHeight)/2)
   }
}
String.prototype.trim = function() { return this.replace(/^\s+|\s+$/g, ''); }

jQuery.preloadImages = function()
{
  for(var i = 0; i<arguments.length; i++)
  {
    jQuery(document.createElement("img")).attr("src", arguments[i]);
  }
}