function pop(url){
  var popup_window =  window.open(url,'popupWindow','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=yes,copyhistory=no,width=640,height=480,screenX=150,screenY=150,top=150,left=150')
  popup_window.title = "Welz Tool - Tour our facilities"
  return false
}

function getElementsByClassName(clsName) { 
	var arr = new Array(); 
	var elems = document.getElementsByTagName("*");
	for ( var cls, i = 0; ( elem = elems[i] ); i++ ){
		if ( elem.className == clsName ){
			arr[arr.length] = elem;
		}
	}
	return arr;
}

window.onload = function() {
   var thumbs = getElementsByClassName('thumbnail-link') 
   for(i = 0; i < thumbs.length; ++i){
      thumbs[i].onclick = function() {
         return pop(this.href)
      }
   }
}