function IsNumeric(strString){
	var strValidChars = "0123456789.-+ ";
	var strChar;
	var blnResult = true;

	if (strString.length == 0) return false;

	//  test strString consists of valid characters listed above
	for (i = 0; i < strString.length && blnResult == true; i++)
	  {
	  strChar = strString.charAt(i);
	  if (strValidChars.indexOf(strChar) == -1)
		 {
		 blnResult = false;
		 }
	  }
	return blnResult;
}
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){
	   return false
	}

	if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
	   return false
	}

	if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		return false
	}

	 if (str.indexOf(at,(lat+1))!=-1){
		return false
	 }

	 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		return false
	 }

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

	 return true					
}
function visa_verification(){
	var ok = 1;

	if(document.visa_form.name.value == ""){
		alert("Please Enter your Name.");
		return false;
		ok = 0;
	}
	else if(document.visa_form.company.value == ""){
			alert("Please Enter your Company Name.");
			return false;
			ok = 0;
	}
	else if(echeck(document.visa_form.email.value) == false || document.visa_form.email.value == ""){
			alert("Please Enter a valid email");
			return false;
			ok = 0;
	}
	else if(IsNumeric(document.visa_form.mobile.value) == false || document.visa_form.mobile.value==""){
			alert("Please Enter a valid Mobile number.");
			return false;
			ok = 0;
	}
	else if(IsNumeric(document.visa_form.telephone.value) == false || document.visa_form.telephone.value==""){
			alert("Please Enter a valid Telephone number.");
			return false;
			ok = 0;
	}
	else if(document.visa_form.country.value == ""){
			alert("Please Enter your Country.");
			return false;
			ok = 0;
	}
	
	if(ok==1){document.visa_form.submit();}
}