function chk_frm_mail(){
	 if(document.getElementById('equip_age').value==""){
	   alert("Please enter age of existing equipment");
	   document.getElementById('equip_age').focus();
	   return false;
	 }
	
    if(document.getElementById('con_name').value==""){
	   alert("Please enter the name");
	   document.getElementById('con_name').focus();
	   return false;
	 }

	 if(document.getElementById('con_email').value==""){
	   alert("Please enter the Email-Id");
	   document.getElementById('con_email').focus();
	   return false;
	 }
	  
	 if(document.getElementById('con_email').value.length >0) {
	 i=document.getElementById('con_email').value.indexOf("@")
	 j=document.getElementById('con_email').value.indexOf(".",i)
	 k=document.getElementById('con_email').value.indexOf(",")
	 kk=document.getElementById('con_email').value.indexOf(" ")
	 jj=document.getElementById('con_email').value.lastIndexOf(".")+1
	 len=document.getElementById('con_email').value.length
		}
 	if ((i>0) && (j>(1+1)) && (k==-1) && (kk==-1) && (len-jj >=2) && (len-jj<=3)) {
 	}
 	else {
 		alert("Please enter a valid Email address.\n" +
		document.getElementById('con_email').value + " is invalid.");
		document.getElementById('con_email').focus() ;
		return false;
		 } 
		 
		 
		 if(document.getElementById('address').value==""){
	   alert("Please enter address");
	   document.getElementById('address').focus();
	   return false;
	 }
	 
	 
	  if(document.getElementById('phone').value==""){
	   alert("Please enter phone number");
	   document.getElementById('phone').focus();
	   return false;
	 }
	 
	  if(document.getElementById('duration').value==""){
	   alert("Please enter the contact time duration");
	   document.getElementById('duration').focus();
	   return false;
	 }
   return true;
  }
  
  
  
function  chk_validate(){

	 if(document.getElementById('f1name').value==""){
	   alert("Please enter your first name.");
	  document.getElementById('f1name').focus();
	   return false;
	 }
	 
	  if(document.getElementById('address').value==""){
	   alert("Please enter your address.");
	  document.getElementById('address').focus();
	   return false;
	 }
	  if(document.getElementById('city').value==""){
	   alert("Please enter your city name");
	  document.getElementById('city').focus();
	   return false;
	 }
	 
	  if(document.getElementById('state').value==""){
	   alert("Please enter your state.");
	  document.getElementById('state').focus();
	   return false;
	 }
	  if(document.getElementById('zipcode').value==""){
	   alert("Please enter your zipcode");
	  document.getElementById('zipcode').focus();
	   return false;
	 }
	 
	  if(document.getElementById('phone').value==""){
	   alert("Please enter your phone number.");
	  document.getElementById('phone').focus();
	   return false;
	 }
	 
	 
     if(document.getElementById('sub_email').value==""){
	   alert("Please enter the Email Id");
	  document.getElementById('sub_email').focus();
	   return false;
	 }
	  
  var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
   var address = document.getElementById('sub_email').value;
   if(reg.test(address) == false) {
      alert('Invalid Email Address');
      return false;
   }
}
  
  
  function contactinfo(){
    if(document.getElementById('fname').value==""){
	   alert("Please enter the first name");
	   document.getElementById('fname').focus();
	   return false;
	 }

	 if(document.getElementById('cont_email').value==""){
	   alert("Please enter the Email-Id");
	   document.getElementById('cont_email').focus();
	   return false;
	 }
	  
	 if(document.getElementById('cont_email').value.length >0) {
	 i=document.getElementById('cont_email').value.indexOf("@")
	 j=document.getElementById('cont_email').value.indexOf(".",i)
	 k=document.getElementById('cont_email').value.indexOf(",")
	 kk=document.getElementById('cont_email').value.indexOf(" ")
	 jj=document.getElementById('cont_email').value.lastIndexOf(".")+1
	 len=document.getElementById('cont_email').value.length
		}
 	if ((i>0) && (j>(1+1)) && (k==-1) && (kk==-1) && (len-jj >=2) && (len-jj<=3)) {
 	}
 	else {
 		alert("Please enter a valid cont_email address.\n" +
		document.getElementById('cont_email').value + " is invalid.");
		document.getElementById('cont_email').focus() ;
		return false;
		 } 
   return true;
  }