function strTrim(tmpStr)
{
	var i;
	for (i=0; i < tmpStr.length; ++i)
		if (tmpStr.charAt(i) != " ") break;
	tmpStr = tmpStr.substring(i);
	for (i=tmpStr.length - 1; i >= 0; --i)
		if (tmpStr.charAt(i) != " ") break;
	tmpStr = tmpStr.substring(0, i + 1);
	return tmpStr;
}
function chkEmail(tmpStr)
{
	var i;
	var posAt = 0;
	var posDot = 0
	var count = 0;
	for(i=0;i<tmpStr.length;++i)
	{
		if(tmpStr.charAt(i) == "@")
		{
			posAt = i;
			count++;
		}
		if(tmpStr.charAt(i) == ".")
		{
			posDot = i;
		}
		if (!((tmpStr.charAt(i) >= "0" && tmpStr.charAt(i) <= "9")
				||(tmpStr.charAt(i) >= "a" && tmpStr.charAt(i) <= "z")
				|| (tmpStr.charAt(i)>= "A" && tmpStr.charAt(i) <= "Z")
				|| (tmpStr.charAt(i) == "-")
				|| (tmpStr.charAt(i) == "_")
				|| (tmpStr.charAt(i) == "@")
				|| (tmpStr.charAt(i) == ".")
			)) return false;
	}
	if(count>1) return false;
	if(eval(posAt) > 1 && posAt != tmpStr.length-1 && posDot > posAt && posDot != tmpStr.length-1) return true;
	return false;
}
//Animated Window- By Rizwan Chand (rizwanchand@hotmail.com)
//Modified by DD for NS compatibility
//Visit http://www.dynamicdrive.com for this script
function expandingWindow(website) {
var windowprops='width=100,height=100,scrollbars=yes,status=yes,resizable=yes'
var heightspeed = 4; // vertical scrolling speed (higher = slower)
var widthspeed = 7;  // horizontal scrolling speed (higher = slower)
var leftdist = 300;    // distance to left edge of window
var topdist = 275;     // distance to top edge of window

if (window.resizeTo&&navigator.userAgent.indexOf("Opera")==-1) {
var winwidth = 750 - leftdist;
var winheight = window.screen.availHeight - topdist;
var sizer = window.open("","","left=" + leftdist + ",top=" + topdist +","+ windowprops);
for (sizeheight = 1; sizeheight < winheight; sizeheight += heightspeed)
sizer.resizeTo("1", sizeheight);
for (sizewidth = 1; sizewidth < winwidth; sizewidth += widthspeed)
sizer.resizeTo(sizewidth, sizeheight);
sizer.location = website;
}
else
window.open(website,'mywindow');
}

function update()
{
	if(strTrim(obj.name.value)=="")
	{
		alert("Please Enter Your Name. ");
		obj.name.focus();
		return false;
	}
	if(obj.dist.selectedIndex==0)
	{
		alert("Please Select District. ");
		obj.dist.focus();
		return false;
	}
	if(strTrim(obj.address.value)=="")
	{
		alert("Please Enter Your Address. ");
		obj.address.focus();
		return false;
	}
	if(strTrim(obj.email.value)!="")
	{
		if(chkEmail(obj.email.value)==false)
		{
			alert("Please Enter Valid Email Address. ");
			obj.email.focus();
			return false;
		}
	}
	obj.action = "eye_donation.php?opt=update";
	obj.submit();
}