var leftType="visible";

function prevPage(){
	if (parent.tocFrame!=undefined){		
		if (parent.tocFrame.loaded){
			parent.tocFrame.prevSco();
		}
	}
}

function nextPage(){
	if (parent.tocFrame!=undefined){
		if (parent.tocFrame.loaded){
			parent.tocFrame.nextSco();
		}
	}
}

function fullClick(){
	if (parent.leftFrame!=undefined){
		if (leftType=="visible"){
			parent.leftFrame.cols="0,10,*,10";
			leftType="hidden";
			image_full.alt="ÏÔʾÊÓƵ";
		}
		else{
			parent.leftFrame.cols="180,10,*,10";
			leftType="visible";
			image_full.alt="Òþ²ØÊÓƵ";
		}
	}
}