function imgChangeOn(name) {
    img = eval('document.images.'+name);
    imgsrc = img.src.replace('_a.gif','.gif');
    img.src = imgsrc.replace('.gif','_a.gif');
}
function imgChangeOff(name) {
    img = eval('document.images.'+name);
    img.src = img.src.replace('_a.gif','.gif');
}

function spacer(flag){
	if (document.layers || flag=="all") {
		document.write ('<font size=1>');
		for (n=0;n<30;n++) {
		document.write ('&nbsp;&nbsp; ');
		}
		document.write ('</font>');
	}
}

	function showPosLeft(elementname) {
		left = 0;
		pos=document.getElementById(elementname);
		while (pos.offsetParent!=null) { //  && pos.id!='mainbox'
			pos=pos.offsetParent;
			left= left + pos.offsetLeft;
		}
		return left
	}
	
	function showPosTop(elementname) {

		y = 0;
		pos=document.getElementById(elementname);;
		while (pos.offsetParent!=null) {
			pos=pos.offsetParent;
			y= y + pos.offsetTop;
            
		}
		return y
	}
	
	//global
	var optionname='';
	function setOptionname(name) {
		optionname=name;
	}
	
	function hideOption() {
		if (optionname && document.getElementById('optioncontent'+optionname).style.visibility=='visible') {
			showOption(optionname,0,0); 
		}
	}
	
	function showOption(name,difx,dify) {
		if (name!=optionname) {
			hideOption();
		}
		optionname='';
		
         
		x=showPosLeft('option'+name);
		//document.getElementById('optioncontent'+name).style.left=(x+difx);
		//document.getElementById('optioncontent'+name).style.setAttribute('left',x+difx);
		
		y=showPosTop('option'+name);

		//document.getElementById('optioncontent'+name).style.setAttribute('top',y+dify);
		//document.getElementById('optioncontent'+name).style.top=y+dify;


		if (document.getElementById('optioncontent'+name).style.visibility!='visible') {
			document.getElementById('optioncontent'+name).style.visibility='visible';
		} else {
			document.getElementById('optioncontent'+name).style.visibility='hidden';
		}
		//alert(name);
        setTimeout('setOptionname(\''+ name +'\')',300);
	}