var multimediaPlaceHolder = null;

		var postRequest = function(event, servletName, params, placeholder, async, x, y){
			
			async = (async == null) ? true : async;
			multimediaPlaceHolder = placeholder;
			if(async){
				postRequestAsync(event, servletName, params, placeholder, x, y);
			}else{
				postRequestSync(servletName, params, placeholder);
			}

		}
		var postRequestAsync = function(event, servletName, params, placeholder, defaultX, defaultY){
			if(event){
				var x = Event.pointerX(event);
				var y = Event.pointerY(event);

				defaultX = defaultX || 800;
				defaultY = defaultY || 200;

				showMultimediaLoading(x, y, defaultX, defaultY, placeholder);
			}

			var myAjax = new Ajax.Request(servletName+'?'+params,{asynchronous: true, method: 'post',
			 onComplete:(function() {
			 	if(placeholder) {
			 		Element.update(placeholder, myAjax.transport.responseText);
			 	}
				hideMultimediaLoading();
			 	})
			 }) ;
		}
		var postRequestSync = function(servletName, params, placeholder){
			var myAjax = new Ajax.Request(servletName+'?'+params,{asynchronous: false, method: 'post' }) ;
			if(placeholder) {
				Element.update(placeholder, myAjax.transport.responseText);
			}
		}

		function firstPageControl(firstPage){
			if (firstPage == null){
				var imagePageDefault = 1
			}else{
				var imagePageDefault= $('firstPage').getAttribute('imagePage');
			}
			return imagePageDefault;
		}

		function topFirstPageControl(pageHour){
			if (pageHour == null) {
				var paperHourDefault = 0
			}else{
				var paperHourDefault= $('pageHour').getAttribute('pageHourId');
			}
			return paperHourDefault;
		}

		function showMultimediaLoading(x, y, defaultX, defaultY, placeholder){
			
			if(placeholder) {
				changeOpac(25, placeholder);
			}
			var panel = $('multimedya-yukleniyor-panel');
			panel.style.left = defaultX + 'px';
			panel.style.top = (y + defaultY) + 'px';

			panel.style.display = '';
		}

		function hideMultimediaLoading(placeholder){
			setTimeout((function(){
				$('multimedya-yukleniyor-panel').style.display = 'none';
				placeholder = (placeholder || multimediaPlaceHolder);
				if(placeholder){
					changeOpac(100, placeholder);
				}
			}).bind(this), 500);
		}