/* This script and many more are available free online at
The JavaScript Source!! http://javascript.internet.com
Created by: James Edwards | http://www.brothercake.com/ */
// GNU Lesser General Public License -- http://www.gnu.org/licenses/lgpl.html
//******************************************************

//DOM-ready watcher
function domFunction(f, a) {
 	//initialise the counter
 	var n = 0;

 	//start the timer
 	var t = setInterval(function() {
		  //continue flag indicates whether to continue to the next iteration
		  //assume that we are going unless specified otherwise
		  var c = true;

		  //increase the counter
		  n++;

  		//if DOM methods are supported, and the body element exists
		  //(using a double-check including document.body, for the benefit of older moz builds [eg ns7.1]
		  //in which getElementsByTagName('body')[0] is undefined, unless this script is in the body section)
		  if(typeof document.getElementsByTagName != 'undefined' && (document.getElementsByTagName('body')[0] != null || document.body != null)) {
			   //set the continue flag to false
			   //because other things being equal, we're not going to continue
			   c = false;

   			//but ... if the arguments object is there
			   if(typeof a == 'object') {
    				//iterate through the object
    				for(var i in a) {
     					//if its value is "id" and the element with the given ID doesn't exist
     					//or its value is "tag" and the specified collection has no members
     					if ((a[i] == 'id' && document.getElementById(i) == null) || (a[i] == 'tag' && document.getElementsByTagName(i).length < 1)) {
      						//set the continue flag back to true
      						//because a specific element or collection doesn't exist
		 			     	c = true;

      						//no need to finish this loop
	 	     				break;
    					 }
   				 }
  			 }

   			//if we're not continuing
	 	  	//we can call the argument function and clear the timer
		 	  if(!c) { f(); clearInterval(t); }
    }

   	//if the timer has reached 60 (so timeout after 15 seconds)
   	//in practise, I've never seen this take longer than 7 iterations [in kde 3
   	//in second place was IE6, which takes 2 or 3 iterations roughly 5% of the time]
   	if(n >= 60) {
    		//clear the timer
  	  	clearInterval(t);
    }
  }, 250);
};