/*1-->banner 728x90
	2-->skyscraper 160x600
	3-->imu 336x280
	4-->idg 1x1
	5-->misc
	*/
	var dart_url_for_layer1;
	var dart_url_for_layer2;
	var dart_url_for_layer3;
	var dart_url_for_layer4;
	var dart_url_for_layer5;