var dList = new Array();
function chDisp() {
	divList = document.getElementsByTagName('div');
	for(i=0; i<divList.length; i++){
		switch(divList[i].id){
			case "display1":
			case "display2":
			case "display3":
				dList[divList[i].id] = divList[i];
				break;
		}
	}
}
 
imagefile = new Array("/common/images/l_menu_plus.gif", "/common/images/menu_minus.gif");
image = new Array(imagefile.length);
 
 
for(count = 0; count < (imagefile.length - 1); count++){
	image[count] = new Image();
	image[count].src = imagefile[count];
}
 
function ImageChange(id){
	if(window.document.images[id].src.indexOf(imagefile[0]) != -1){
		window.document.images[id].src  = imagefile[1]
	}else{
		window.document.images[id].src  = imagefile[0];
	}
}
 
function Display(targetID){
	if(document.all){
		if(dList[targetID].style.display == "block"){
			dList[targetID].style.display = "none"
		}else if(dList[targetID].style.display == "none"){
			dList[targetID].style.display = "block";
		}
		else{
			dList[targetID].style.display = "block";
		}
	}else if(document.getElementById){
		if(document.getElementById(targetID).style.display == "block"){
			document.getElementById(targetID).style.display = "none"
		}else if(document.getElementById(targetID).style.display == "none"){
			document.getElementById(targetID).style.display = "block";
		}
	}
}