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 Address")
		   return false
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   alert("Invalid Email Address")
		   return false
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		    alert("Invalid Email Address")
		    return false
		}

		 if (str.indexOf(at,(lat+1))!=-1){
		    alert("Invalid Email Address")
		    return false
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    alert("Invalid Email Address")
		    return false
		 }

		 if (str.indexOf(dot,(lat+2))==-1){
		    alert("Invalid Email Address")
		    return false
		 }
		
		 if (str.indexOf(" ")!=-1){
		    alert("Invalid Email Address")
		    return false
		 }

 		 return true					
	}

function ValidateForm(){

	var fullname=document.form.name
	var emailID=document.form.txtEmail
	var msg=document.form.textarea
	

	
	
	if ((fullname.value==null)||(fullname.value=="")){
		alert("Please Enter Your Name")
		fullname.focus()
		return false
	}
	
	

	

//--------------------------email address validation-----------------------------
	if ((emailID.value==null)||(emailID.value=="")){
		alert("Please Enter Email Address")
		emailID.focus()
		return false
	}
	
	if (echeck(emailID.value)==false){
		emailID.value=""
		emailID.focus()
		return false
	}
//--------------------------email address validation-----------------------------


if ((msg.value==null)||(msg.value=="")){
		alert("Please Enter Your Message")
		msg.focus()
		return false
	}


	
	
	

	
	
	
	return true
 }