function showButton () {
	if ( navigator.appName == 'Microsoft Internet Explorer'  && parseInt( navigator.appVersion ) >= 4) {
		revisions.innerHTML = '<form id="form1" action="none">'
		+ '<input type="button" id="hideShowButton" value="Show document revision marks" onclick="toggleRows();" align="right" />'
		+ ' </form>';
		}
	}

var redliningVisible = false;
   
function showHide(value) {
	var nodeArray = new Array;
	nodeArray = document.all.tags("del");
	for (var i=0; i < nodeArray.length; i++) {
		nodeArray[i].style.display = value;
		}
	nodeArray = document.all.tags("ins");
	for (var i=0; i < nodeArray.length; i++) {
		if (value == 'none') {
			nodeArray[i].style.textDecoration = 'none';
			 }
		else {
			nodeArray[i].style.textDecoration = 'underline'; 
			}
        		}
    	}
   
function toggleRows() {
	if (redliningVisible) {
		showHide('none');
		redliningVisible = false;
		form1.hideShowButton.value="Show document revision marks";
      		} 
	else {
		showHide("");
		redliningVisible = true;
		form1.hideShowButton.value="Hide document revision marks";
		}
	}