var imgObj; 
var xPos, yPos;
var menuoverID;

function sethelpcursor(object) {
	if (ns4 || ns6 || ns7)
		object.style.cursor="help";
	else
		object.style.cursor="help";
}

function unsethelpcursor(object) {
	if (ns4 || ns6 || ns7)
		object.style.cursor="default";
	else
		object.style.cursor="default";
}

function overleft(imgNum, obj, imagefile) { 
    if (menuReadyState) { 
		imgObj = document.images["b"+imgNum]; 
		xPos = getRealLeft(imgObj)+100; 
		yPos = getRealTop(imgObj) + imgObj.height-12;
		menuoverID = setTimeout("activateMenu(" + imgNum + "," + xPos + "," + yPos + ");setMenuImage('" + obj.id + "','" + imagefile + "')", 300);
	} 
} 

function offleftmenu(object, newimage) {
	clearTimeout(menuoverID);
	deactivateMenus(false);
	if (newimage != "") setImage(object, newimage);
}

function setImage(object, newimage) {
	object.src = "/niosh/miningdev/images/" + newimage;
}

function setMenuImage(imgID, newimage) {
	if (newimage != "") document.getElementById(imgID).src = "/niosh/miningdev/images/" + newimage;
}

document.write("<table width='100%' border='0' cellpadding='0' cellspacing='0'><tr><td width='5'></td><td valign='top'><table width='100%' border='0' cellpadding='0' cellspacing='0'><tr align='left' valign='top'><td width='140' height='68' rowspan='2'><a href='http://www.cdc.gov/'><img src='header/nav11.gif' alt='CDC logo' width='140' height='60' border='0'><img src='header/nav21.gif' width='140' height='8' border='0' alt='Safer Healthier People '></a></td><td rowspan='2'><img src='header/nav12.gif' alt=' ' width='12' height='63'></td><td><a href='http://www.cdc.gov/'><img src='header/nav13a.gif' alt='CDC Home' width='226' height='19' border='0'></a><a href='http://www.cdc.gov/search.htm'><img src='header/nav14a.gif' alt='CDC Search' width='74' height='19' border='0'></a><a href='http://www.cdc.gov/az.do'><img src='header/nav15a.gif' alt='CDC Health Topics A-Z' height='19' border='0'></a></td><td width='100%' height='19' bgcolor='#000099'><img src='header/spacer.gif' alt=' ' width='1' height='19'></td></tr><tr><td align='left' valign='top'><a href='http://www.cdc.gov/niosh/'><img src='header/NIOSHlogo2.gif' alt='NIOSH Mining Safety and Health Research' border='0'></a></td><td height='47'><img src='header/spacer.gif' alt=' ' width='1' height='49'></td></tr></table></td><td width='5'></td></tr></table><a href='default.htm' accesskey='1'></a><a href='sitemap.htm' accesskey='2'></a><a href='usingthissite.htm' accesskey='3'></a>");