if(document.images){

     var img01_on=new Image();
     var img01_off=new Image();

     var img02_on=new Image();
     var img02_off=new Image();

     var img03_on=new Image();
     var img03_off=new Image();

     var img04_on=new Image();
     var img04_off=new Image();

     var img05_on=new Image();
     var img05_off=new Image();

     var img06_on=new Image();
     var img06_off=new Image();

     var img07_on=new Image();
     var img07_off=new Image();
}

function preLoad(){

     img01_on.src="http://www.coanet.com/images/topbt_on_01.jpg";
     img01_off.src="http://www.coanet.com/images/topbt_off_01.jpg";

     img02_on.src="http://www.coanet.com/images/topbt_on_02.jpg";
     img02_off.src="http://www.coanet.com/images/topbt_off_02.jpg";

     img03_on.src="http://www.coanet.com/images/topbt_on_03.jpg";
     img03_off.src="http://www.coanet.com/images/topbt_off_03.jpg";

     img04_on.src="http://www.coanet.com/images/topbt_on_04.jpg";
     img04_off.src="http://www.coanet.com/images/topbt_off_04.jpg";

     img05_on.src="http://www.coanet.com/images/topbt_on_05.jpg";
     img05_off.src="http://www.coanet.com/images/topbt_off_05.jpg";

     img06_on.src="http://www.coanet.com/images/topbt_on_06.jpg";
     img06_off.src="http://www.coanet.com/images/topbt_off_06.jpg";

     img07_on.src="http://www.coanet.com/images/topbt_on_07.jpg";
     img07_off.src="http://www.coanet.com/images/topbt_off_07.jpg";

}



//?}?E?X??????????????????

function rollon(img,ba){
     imgon=eval(img+"_on.src");

     if ((document.images)&&(imgon)){
          document.images[ba].src=eval(img+"_on.src");
     }
}


//?}?E?X???O??????????????


function rolloff(img,ba){
     imgoff=eval(img+"_off.src");

     if ((document.images)&&(imgoff)){
          document.images[ba].src=eval(img+"_off.src");
     }
}


function CH1(P1,P2){
	window.open(P1,"sub");
	window.open(P2,"main");
}




//???X?g?\¦


function pulldown01(id)
{
	if(id == "navul"){
		navul.style.visibility = "visible";
		ss.style.visibility = "hidden";
		sol.style.visibility = "hidden";
		dow.style.visibility = "hidden";
		rec.style.visibility = "hidden";
		ss2.style.visibility = "hidden";
	}
	
	if(id == "ss"){
		navul.style.visibility = "hidden";
		ss.style.visibility = "visible";
		sol.style.visibility = "hidden";
		dow.style.visibility = "hidden";
		rec.style.visibility = "hidden";
		ss2.style.visibility = "hidden";
	}
	
	if(id == "sol"){
		navul.style.visibility = "hidden";
		ss.style.visibility = "hidden";
		sol.style.visibility = "visible";
		dow.style.visibility = "hidden";
		rec.style.visibility = "hidden";
		ss2.style.visibility = "hidden";
	}
	
	if(id == "dow"){
		navul.style.visibility = "hidden";
		ss.style.visibility = "hidden";
		sol.style.visibility = "hidden";
		dow.style.visibility = "visible";
		rec.style.visibility = "hidden";
		ss2.style.visibility = "hidden";
	}
	
	if(id == "rec"){
		navul.style.visibility = "hidden";
		ss.style.visibility = "hidden";
		sol.style.visibility = "hidden";
		dow.style.visibility = "hidden";
		rec.style.visibility = "visible";
		ss2.style.visibility = "hidden";
	}

	if(id == "ss2"){
		navul.style.visibility = "hidden";
		ss.style.visibility = "hidden";
		sol.style.visibility = "hidden";
		dow.style.visibility = "hidden";
		rec.style.visibility = "hidden";
		ss2.style.visibility = "visible";
	}
}
	

function pulldownmenu_off()
{
	navul.style.visibility = "hidden";
	ss.style.visibility = "hidden";
	sol.style.visibility = "hidden";
	dow.style.visibility = "hidden";
	rec.style.visibility = "hidden";
	ss2.style.visibility = "hidden";
}



function checkout()
{
	xx =event.x;
	yy =event.y;

	sx = parselnt(navul.style.left);
	sy = parselnt(navul.style.top)-mHeight;
	ex = sx + parselnt(navul.style.width);
	ex = sx + parselnt(navul.style.height)+mHeight;
	if((xx < sx)||(yy < sy)||(xx > ex)||(yy > ey)) pulldownmenu_off();
	
	msxy.style.left = event.x +'8';
	msxy.style.to = event.y +'16';
	msxy.innerText = xx;
}

//document.onmousemove = checkout;





// JavaScript Document