function mainImageRandom(){
	var mainImage = new Array("mainimage.gif","mainimage.gif","mainimage.gif","mainimage_direct.jpg","mainimage_direct.jpg");
	var mainUrl = new Array("/app/m/staff/a/U01","http://ikworks.jp/contents/d/direct/index.html","http://ikworks.jp/contents/d/direct/index.html","http://ikworks.jp/contents/d/direct/index.html","http://ikworks.jp/contents/d/direct/index.html");
	var randomInt = Math.floor(Math.random()*50);

	if(randomInt<10){
		var imageNum = 0;
	}else if(randomInt<20){
		var imageNum = 1;
	}else if(randomInt<30){
		var imageNum = 2;
	}else if(randomInt<40){
		var imageNum = 3;
	}else if(randomInt<50){
		var imageNum = 4;
	}

	document.write('<a href="' + mainUrl[imageNum] +'"><img src="/_img/S/' + mainImage[imageNum] + '" alt="ライフスタイルから探せる医療介護ワークス" width="596" height="165" title="ライフスタイルから探せる医療介護ワークス" /></a>');
}


function showPlagin(idno){
pc = ('PlagClose' + (idno));
po = ('PlagOpen' + (idno));
if( document.getElementById(pc).style.display == "none" ) {
document.getElementById(pc).style.display = "block";
document.getElementById(po).style.display = "none";
}
else {
document.getElementById(pc).style.display = "none";
document.getElementById(po).style.display = "block";
}
}