function  changeImg(imageNo){

	var img01 = new Image();
	var img02 = new Image();
	var img03 = new Image();
	var img04 = new Image();
	var img05 = new Image();
	var img06 = new Image();
	var img07 = new Image();
	var img08 = new Image();
	var img09 = new Image();
	var img10 = new Image();
	var img11 = new Image();
	var img12 = new Image();
	var img13 = new Image();
	var img14 = new Image();

	img01.src = "../graph/goudou01.jpg"
	img02.src = "../graph/goudou02.jpg"
	img03.src = "../graph/goudou03.jpg"
	img04.src = "../graph/goudou04.jpg"
	img05.src = "../graph/goudou05.jpg"
	img06.src = "../graph/goudou06.jpg"
	img07.src = "../graph/goudou07.jpg"
	img08.src = "../graph/goudou08.jpg"
	img09.src = "../graph/goudou09.jpg"
	img10.src = "../graph/goudou10.jpg"
	img11.src = "../graph/goudou11.jpg"
	img12.src = "../graph/goudou12.jpg"
	img13.src = "../graph/goudou13.jpg"
	img14.src = "../graph/goudou14.jpg"
	
	if(imageNo == 1){
		document.images["pic_01"].src=img01.src;
	}
	else if(imageNo == 2){
		document.images["pic_01"].src=img02.src;
	}
	else if(imageNo == 3){
		document.images["pic_01"].src=img03.src;
	}
	else if(imageNo == 4){
		document.images["pic_01"].src=img04.src;
	}
	else if(imageNo == 5){
		document.images["pic_01"].src=img05.src;
	}
	else if(imageNo == 6){
		document.images["pic_01"].src=img06.src;
	}
	else if(imageNo == 7){
		document.images["pic_01"].src=img07.src;
	}
	else if(imageNo == 8){
		document.images["pic_01"].src=img08.src;
	}
	else if(imageNo == 9){
		document.images["pic_01"].src=img09.src;
	}
	else if(imageNo == 10){
		document.images["pic_01"].src=img10.src;
	}
	else if(imageNo == 11){
		document.images["pic_01"].src=img11.src;
	}
	else if(imageNo == 12){
		document.images["pic_01"].src=img12.src;
	}
	else if(imageNo == 13){
		document.images["pic_01"].src=img13.src;
	}
	else if(imageNo == 14){
		document.images["pic_01"].src=img14.src;
	}
	
}