<!--//
function validate_email(field,alerttxt)
	{
		with (field)
		{
			apos=value.indexOf("@")
			dotpos=value.lastIndexOf(".")
			if (apos<1||dotpos-apos<2) {return false;}
			else {return true}
		}
	}
	
function IsNumeric(sText)
{
   var ValidChars = "0123456789.";
   var IsNumber=true;
   var Char;


   for (i = 0; i < sText.length && IsNumber == true; i++)
      {
      Char = sText.charAt(i);
      if (ValidChars.indexOf(Char) == -1)
         {
         IsNumber = false;
         }
      }
   return IsNumber;

   }

	function validate_form(f){	
		
		if (f.contactName.value=='') {
			alert('Please Include Your Name. Thank you.');
			f.contactName.focus();
			return false;
		}
		
		if (f.coName.value=='') {
			alert('Please Include Your Institution / Company Name. Thank you');
			f.coName.focus();
			return false;
		}
		
		
		if(f.email.value==''){
			alert('Please Include Your Email Address. Thank you');
			f.email.focus();
			return false;
		}
		
		if (!validate_email(f.email)) {
			alert('Please Include A Valid Email Address. Thank you');
			f.email.focus();
			return false;
		}
		
		
		if(f.phoneNo.value==''){
			alert('Please Include Your Phone Number. Thank you');
			f.phoneNo.focus();
			return false;
		}
		
		
		if (!IsNumeric(f.phoneNo.value)){
			alert('Please Include A Valid Phone Number. Thank you'); 
      		f.phoneNo.focus(); 
      		return false; 
 		} 
 		
 		if(f.fax.value==''){
			alert('Please Include Your Fax Number. Thank you');
			f.fax.focus();
			return false;
		}
		
		
		if (!IsNumeric(f.fax.value)){
			alert('Please Include A Valid Fax Number. Thank you'); 
      		f.fax.focus(); 
      		return false; 
 		} 
		
		if(f.address.value==''){
			alert('Please Include Your Address. Thank you');
			f.address.focus();
			return false;
		}
		
		if(f.comments.value==''){
			alert('Please Include Your Comments. Thank you');
			f.comments.focus();
			return false;
		}
		
			
		return true;
		
	}

//-->