function fSetLeftHeight() {
      zLeftnavHeight=eval(document.body.scrollHeight-300);
      document.getElementById('LeftNavNew').style.height=zLeftnavHeight+'px';
    }


	function validate_form()
	{
		var illegalChars = /\W/;
		
		var emailFilter=/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/;
		
		var stripped = strng.replace(/[\(\)\.\-\ ]/g, '');
		
		
	if (document.getElementById('cart').inpFirstName.value=='') 
    {
      alert('Please give the First name.')
      return false;
    }
   
    	if (document.getElementById('cart').inpLastName.value=='') 
    {
      alert('Please give the Last name.')
      return false;
    }	
    

    if (illegalChars.test(document.getElementById('cart').inpFirstName.value)) 
    {
      
       alert('The First name contains illegal characters.')
      return false;
    } 
    
     if (illegalChars.test(document.getElementById('cart').inpLastName.value)) 
    {
      
       alert('The Last Name contains illegal characters.')
       return false;
    } 
    
    
    	if (document.getElementById('cart').inpTelephone.value=='' && document.getElementById('cart').inpTelephone.value=='') 
    {
      alert('Please give atleast a contact number.')
      return false;
    }
   
    
    	if (document.getElementById('cart').inpEmail.value=='') 
    {
      alert('EmailAddress is empty.')
      return false;
    }
    
    	if (emailFilter.test(document.getElementById('cart').inpEmail.value)) 
    {
    	return true;
    }

    	else
    	{
    		alert("Invalid E-mail Address! Please re-enter.")
			return (false)
    	}
    
    
    	if (document.getElementById('cart').inpAddress.value=='') 
    {
      alert('Please give your Physical address.')
      return false;
    }
   
    
    {
    	return true;
    }
	}