function doGetById(i) {
		var o = null;
		if (document.getElementById && document.getElementById(i) != null)
			o = document.getElementById(i);
		else if (document.layers && document.layers[i] != null)
			o = document.layers[i];
		else if (document.all)
			if (document.all[i] != null) {
				o = document.all[i];
			}
		return o;
	}
	
	function doSetClass(i, s) {
		var o = doGetById(i);
		o.className = s;
	}
	
	function doSetImage(i, s) {
		var o = doGetById(i);
		o.src = s;
	}
	
	function setDisplay(id, v) {
		if ( v==0 ) { v='none'; }
		if ( v==1 ) { v='block'; }
		if ( (v!='block') && (v!='none') ) { v==null }
			
		if (document.getElementById) {
			if (document.getElementById(id) != null) {
				if (v==null) {
					if (document.getElementById(id).style.display == "none") { v = 'block'; } 
					else { v = 'none'; }
				} document.getElementById(id).style.display = v;
			}
		} else { 
			if (document.layers) {	
				if ( v==null ) {
					if (document.id.display == "none"){ v = 'block'; } 
					else { v = 'none'; }
				} document.id.display = v;
			} else {
				if ( v==null ) {
					if (document.all.id.style.visibility == "none"){ v = 'block'; } 
					else { v = 'none'; }
				} document.all.id.style.display = v;
			}	
		}
		
		if (v == null) { return -1; }
		if (v == 'none') { return 0; }
		if (v == 'block') { return 1; }
		
	}
	
	
	
	
	function popupWindow(p,h,w) {
		newwindow=window.open(p,'window','height='+h+',width='+w+',resizable=no,scrollbars=yes,toolbar=no,status=no,location=no,directories=no');
		return false;
	}