function execReadyFunctions() {
 	for(i=0; i < ready_function.length; i++) {
 		ready_function[i]();
 	}
 }
 
 var ready_function = new Array();
 
 function addReadyFunction(f) {
 	if(f != undefined ) {
 		ready_function[ready_function.length] = f;
 	}
 }