function checkValidation()
{
	var name=document.form.name.value
	var email = document.form.email.value
	var mesg=document.form.mesg.value
	var vercode=document.form.vercode.value

	if (name=='')
	{
		alert ('Your contact name')
		document.form.name.focus()
		return false
	}

	if (email=='')
	{
		alert ('Your contact valid email')
		document.form.email.focus()
		return false
	}

	if (mesg=='')
	{
		alert ('Subject of your contact message')
		document.form.mesg.focus()
		return false
	}
	
	if (vercode=='')
	{
		alert ('security code')
		document.form.vercode.focus()
		return false
	}

}



// Function for email validation

function echeck(str) {
		var at="@"
		var dot="."
		var lat=str.indexOf(at)
		var lstr=str.length
		var ldot=str.indexOf(dot)
		if (str.indexOf(at)==-1){
		   alert("invalid email id")
		   return false
		}
		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   alert("invalid email id")
		   return false
		}
		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		    alert("invalid email id")
		    return false
		}
		if (str.indexOf(at,(lat+1))!=-1){
		    alert("invalid email id")
		    return false
		 }
		if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    alert("invalid email id")
		    return false
		 }
		if (str.indexOf(dot,(lat+2))==-1){
		    alert("invalid email id")
		    return false
		 }
		if (str.indexOf(" ")!=-1){
		    alert("invalid email id")
		    return false
		 }
			return true					
	}

function ValidateForm()
{
	var emailID=document.form.email
	if ((emailID.value==null)||(emailID.value==""))
	{
		alert("please Enter your email id")
		emailID.focus()
		return false
	}
	if (echeck(emailID.value)==false)
	{
		emailID.value=""
		emailID.focus()
		return false
	}
	return true
 }