/**An object definition for iterating through result lists**/

function AjaxListIterator(listType, pageSize, searchPath, keyword){
	var listType_ = listType;
	var pageSize_ = pageSize;
	var startIndex_ = 0;	
	var searchPath_ = searchPath;
	var keyword_ = keyword;
	this.getList = getList;

	/**Gets the list for this list type. forward is a boolean indicating direction**/
	function getList(forward){
		
		if (forward){
			startIndex_+=pageSize_;
		} else {
			if(startIndex_>0){
				startIndex_-=pageSize_;
			} else {
				return;
			}
		}
				
		var callback = {
			success:function(o){
				var ul = document.getElementById(listType_+'List');
				ul.innerHTML = o.responseText;
				setUI();
			},
			failure: function(o){}
		}
		
//		document.body.style.cursor="wait";
		var url = searchPath_+"/"+keyword_+"/"+listType+"List/"+startIndex_;
		YAHOO.util.Connect.asyncRequest('GET', url, callback, null);
	}

	function setUI(){
		var backLink = document.getElementById(listType_+'Back');
		var forwardLink =  document.getElementById(listType_+'Forward');
		var ul = document.getElementById(listType_+'List');
		var noDisplayed = ul.getElementsByTagName("li").length;
		var forwardLink =  document.getElementById(listType_+'Forward');
		if (noDisplayed<pageSize_){
			forwardLink.style.visibility = "hidden";
		} else {
			forwardLink.style.visibility = "visible";
		}
	//	document.body.style.cursor="pointer";
	}
}