String.prototype.trim = function() 
    { 
         return this.replace(/^\s+|\s+$/g,''); 
    }


function chkDetails()
{
	var name=document.FrmContactUs.txtName.value;
	//name=name.trim();
	if(name=="")
	{
		alert("Please enter your name");
		document.FrmContactUs.txtName.focus();
		return false;
	}

	var email=document.FrmContactUs.txtEmail.value;
	//email=email.trim();
	if(email=="")
	{
		alert("Please enter your e-mail id");
		document.FrmContactUs.txtEmail.focus();
		return false;
	}

	emailStr1=document.FrmContactUs.txtEmail.value;
	if(isEmail(emailStr1) == false)
	{		
		document.FrmContactUs.txtEmail.focus();
		return false;
	}  

	var dept=document.FrmContactUs.dept.selectedIndex;
	//dept=dept.trim();
	if(dept==0)
	{
		alert("Please select atleast one menu.");
		document.FrmContactUs.dept.focus();
		return false;
	}
	var reason=document.FrmContactUs.notes.value;
	//reason=reason.trim();
	if(reason=="")
	{
		alert("Please enter the notes for contact");
		document.FrmContactUs.notes.focus();
		return false;
	}
	return true;
	}

function isEmail(emailStr1)
{
	var emailPat=/^(.+)@(.+)$/
		var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]"
		var validChars="\[^\\s" + specialChars + "\]"
		var quotedUser="(\"[^\"]*\")"
		var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/
		var atom=validChars + '+'
		var word="(" + atom + "|" + quotedUser + ")"
		var userPat=new RegExp("^" + word + "(\\." + word + ")*$")
		var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$")

		var matchArray=emailStr1.match(emailPat)
		if (matchArray==null) {
			alert("Email address seems incorrect (check @ and .'s)")		
			return false
		}
		
		var user=matchArray[1]
		var domain=matchArray[2]
		if (user.match(userPat)==null) {
			alert("The E-Mail Id doesn't seem to be valid.")
			return false
		}

		var IPArray=domain.match(ipDomainPat)
		if (IPArray!=null) {
			  for (var i=1;i<=4;i++) {
				if (IPArray[i]>255) {
					alert("Destination IP address is invalid!")
					return false
				}
			}	    
			return true
		}

		var domainArray=domain.match(domainPat)
		if (domainArray==null) {
			alert("The domain name doesn't seem to be valid.")
			return false
		}

		var atomPat=new RegExp(atom,"g")
		var domArr=domain.match(atomPat)
		var len=domArr.length
		if (domArr[domArr.length-1].length<2 || 
			domArr[domArr.length-1].length>3) {
		   alert("The address must end in a three-letter domain, or two letter country.")
		   return false
		}

		if (len<2) {
		   var errStr="This address is missing a hostname!"
		   alert(errStr)
		   return false
		}
		
		return true
}