// function openTrialsM() {
//		 myWin= open('/popups/zerorisktrial.htm','','scrollbars=yes,width=800,height=500,resizable=no');
//}

// for old browsers
function openTrialsOld() {
 		 myWin= open('../popups/zerorisktrial2.htm','','scrollbars=yes,width=800,height=500,resizable=no');
}


function openClients() {
		 myWin= open('../popups/clients.htm','','scrollbars=yes,width=800,height=450,resizable=no');
}

function openClientsM() {
		 myWin= open('/popups/clients.htm','','scrollbars=yes,width=800,height=450,resizable=no');
}

function openWin(url, h, w, resize, scroll) {
		 myWin= open(url, "", 
    		"width=" + w + ",height=" + h + ",status=no,toolbar=no,menubar=no,resizable=" + resize + ",scrollbars="+ scroll );
}


var ver=navigator.appVersion;
var agent=navigator.userAgent;
var dom=document.getElementById;

var ns4 = (!dom && document.layers)?true:false;
var op7 = (agent.indexOf("Opera/7") > -1 || agent.indexOf("Opera 7") > -1)?true:false;
var op8 = (agent.indexOf("Opera/8") > -1 || agent.indexOf("Opera 8") > -1)?true:false;
var opNew = op7||op8;
var opOld = (window.opera&&!opNew)?true:false;

var trialWin = '';

// correct path for root derictory
var path = document.location.href;
var urlFr = (path.indexOf(".com/index.htm") > -1)?'popups/zerorisktrial.htm':'../popups/zerorisktrial.htm';

function openTrials() {
	if(ns4||opOld) { 
		openTrialsOld();
	} else {
		myDiv = document.getElementById("trial");
		if(myDiv == null) {

			trialWin += '<table border="0" cellspacing="0" cellpadding="0" style="border:1px dashed #666666;">';
			trialWin += '<tr><td bgcolor="#0069B3" align="right" height="17"><a href="javascript: hideWin()"><img src="/images/popup_win/close_win.gif" width="105" height="15" border="0"></a></td></tr>';
			trialWin += '<tr><td valign="top" background="/images/popup_win/border_2color.gif"><img src="../images/popup_win/border_2color.gif" width="7" height="2"></td></tr>';
			trialWin += '<tr><td>';
			trialWin += '<iframe src="' + urlFr + '" width="650" height="450" scrolling="no" frameborder="0" framespacing="0" id="trialwin" onmouseover="dragIt()"></iframe>';
			trialWin += '</td></tr><tr><td valign="top" background="/images/popup_win/border_2color.gif"><img src="../images/popup_win/border_2color.gif" width="7" height="2"></td></tr>';
			trialWin += '<tr><td bgcolor="#0069B3" align="center" height="17"><a href="javascript: hideWin()"><img src="/images/popup_win/close_win.gif"width="105" height="15" border="0"></a></td></tr></table>';

			if(dom) {
				newDiv = document.createElement('div');
				document.getElementsByTagName('body').item(0).appendChild(newDiv);
				newDiv.setAttribute("id","trial");
				newDiv.innerHTML = trialWin;
				newDiv.style.visibility = 'hidden';
				newDiv.style.position = 'absolute';
				newDiv.style.left = 90;
			} else {
				newDiv += '<div style="visibility: hidden; position: absolute" id="trial">';
	                        newDiv += trialWin;
				newDiv += '</div>';
				document.body.insertAdjacentHTML('beforeEnd',newDiv);
			}
		}
	}

	if (typeof document.body.scrollTop != "undefined") {
		step = document.body.scrollTop; // for IE
	} else if (typeof window.pageYOffset != "undefined") { 
		step = window.pageYOffset; // for NN etc
	} else {
		step = 0;
	}

	document.getElementById("trial").style.top = 90 + step;
	document.getElementById("trial").style.visibility="visible";
}

function hideWin() {
		if(dom) document.getElementById("trial").style.visibility="hidden";
		if(!dom) document.trial.style.visibility="hidden";
}

function getCoords() {

	myTop = (dom) ? document.getElementById("trial").style.top : document.trial.style.top;
	myLeft = (dom) ? document.getElementById("trial").style.left : document.trial.style.top;
	cTop = myTop.slice(0,-2); // cut 'px'
	cLeft = myLeft.slice(0,-2); // cut 'px'
	coords.top = Number(cTop); // convert to int
	coords.left = Number(cLeft); // convert to int

	return coords;
}

var coords = {left:90, top:90};
var start = {left:0, top:0};
var move = {left:0, top:0};
var diff = {h:0, w:0};
var selectedObj = null;           
	
<!-- start drag drop code -->

function startIt(evt) {

	evt = (evt) ? evt : event;
	selectedObj = (evt.target) ? evt.target : evt.srcElement;
	while (selectedObj.id.indexOf("trial") == -1) {
			selectedObj = selectedObj.parentElement;
			if (selectedObj == null) { return true; }
	}
	if (evt.pageX) {
		start.left = evt.pageX;
		start.top = evt.pageY;
	}  else if (evt.clientX) {
		start.left = evt.clientX;
	      	start.top = evt.clientY;
	}
	diff.w = (window.innerWidth) ? window.innerWidth-652 : document.body.clientWidth-652;

	coords = new getCoords();

	if(dom) {
		document.getElementById("trial").style.cursor = 'move';
		document.getElementById("trial").style.filter = "alpha(opacity = 75)";
	}
	return true;
}

function dragIt(evt) {
	evt = (evt) ? evt : event;	
	if (selectedObj == null) { return false; }
		if (evt.pageX) {
			x = evt.pageX;
			y = evt.pageY;
		}  else if (evt.clientX) {
			x = evt.clientX;
		      	y = evt.clientY;
		}
		move.left = x - start.left;
		move.top = y - start.top;
		coords.left += move.left;
		coords.top += move.top;
		if(coords.left >= diff.w) coords.left = diff.w;
		start.left = x;
		start.top = y;	
		if(dom) { 	
			document.getElementById("trial").style.left = coords.left;
			document.getElementById("trial").style.top = coords.top;
			}
		if(!dom) { 	
			document.trial.style.left = coords.left;
			document.trial.style.top = coords.top;
			}
		if (evt.preventDefault) evt.preventDefault();
		evt.returnValue = false;
        	return false;
}

function stopIt() {
        selectedObj = null;
	if(document.getElementById("trial")) { 
		document.getElementById("trial").style.filter = "alpha(opacity = 100)";
		document.getElementById("trial").style.cursor = 'auto';
	}
	return true;
}

<!-- end drag drop code -->
	
document.onmousedown = startIt;
document.onmousemove = dragIt;
document.onmouseup = stopIt;