function checkData ()
{

if (document.forms[0].Name.value.length ==0)
    {
     alert("Please enter your Name.")
      document.forms[0].Name.focus();
     return false     }
   if (document.forms[0].Name.value.length <2)
 {
	alert("Please enter a valid name.")
	 document.forms[0].Name.focus();
     return false     }

//if (document.forms[0].Designation.value.length ==0)
//    {
  //   alert("Please enter your Designation.")
    //  document.forms[0].Designation.focus();
    // return false     }
  // if (document.forms[0].Designation.value.length <2)
// {
	//alert("Please enter your Designation.")
	 //document.forms[0].Designation.focus();
     //return false     }

if (document.forms[0].Company.value.length ==0){
     alert("Please enter your Company name.")
      document.forms[0].Company.focus();
     return false}
	if (document.forms[0].Company.value.length <3)
 {
	alert("Please enter a valid company name.")
	 document.forms[0].Company.focus();
     return false     }


 if (document.forms[0].Parts.value.length ==0)
    {
     alert("Please enter the spares you require.")
      document.forms[0].Parts.focus();
     return false     }
   if (document.forms[0].Parts.value.length <2)
 {
	alert("Please enter the spares you require.")
	 document.forms[0].Parts.focus();
     return false     }

 // *** Check Model field
  if (document.forms[0].Model.selectedIndex == 0)
  {
  alert("Please select your Machine Model. If your Machine model  is not in the list Select ---Not Listed---")
  document.forms[0].Model.focus();
     return false      }

//if (document.forms[0].Serial_No.value.length ==0)
  //  {
    // alert("Please enter the serial no. of your machine.")
      //document.forms[0].Serial_No.focus();
     //return false     }
   //if (document.forms[0].Serial_No.value.length <2)
// {
	//alert("Please enter the serial no. of your machine.")
	 //document.forms[0].Serial_No.focus();
     //return false     }

         
 if (document.forms[0].Email.value.length ==0){
     alert("Please enter a valid Email.");
     document.forms[0].Email.focus();
     return false}

 if (document.forms[0].Email.value.length >0)
 {
     i=document.forms[0].Email.value.indexOf("@")
     j=document.forms[0].Email.value.indexOf(".",i)
     k=document.forms[0].Email.value.indexOf(",")
    kk=document.forms[0].Email.value.indexOf(" ")
    jj=document.forms[0].Email.value.lastIndexOf(".")+1
   len=document.forms[0].Email.value.length
   
   if ((i>0) && (j>(i+1)) && (k==-1) && (kk==-1) && 
     	(len-jj >=2) && (len-jj<=3)) 
		{
       }
   else 
	   {
         alert("Please enter an exact email address.\n" + 
         document.forms[0].Email.value + " is invalid.")
         document.forms[0].Email.focus();
         return false}
     
if(isNaN(document.forms[0].Telephone.value))
{
     alert("Please enter in your telephone number in numerical value")
     document.forms[0].Telephone.focus();
     return false
}
     if (document.forms[0].Telephone.value.length ==0){
     alert("Please enter a valid telephone number.")
      document.forms[0].Telephone.focus();
     return false}

 if (document.forms[0].Telephone.value.length <5)
 	{
	alert("Please enter a valid telephone number.")
	 document.forms[0].Telephone.focus();
     return false     }
     

 }
 
}