function enquiry_form() {
  var error=false;
  var msg='';
  var frm = document.recycle;
  
  var name = document.getElementById('cname').value;
  var email = document.getElementById('email').value;
  var qty = document.getElementById("qty").value;
    var cbrand = document.getElementById("cbrand").value;
	  var cnum = document.getElementById("cnum").value;
	  var remanufacture = document.getElementById("remanufacture").value;
	 
 
 
	  if(trim(name) == '') {
		  msg=msg+'* Please enter Your Name\n';
		  error=true;
	  }
	  
	
	   if(trim(email) == '') {
		  msg=msg+'* Please enter Your Email Address\n';
		  error=true;
	  }
	  else if(!validate_email(email)) {
		  msg=msg+'* Please enter Valid EMail ID\n';
		  error=true;
	   }
	   if(trim(qty) == '') {
		  msg=msg+'* Please enter Quantity\n';
		  error=true;
	  }else if(isInteger(qty)){
		   msg=msg+'* Please Enter Quantity in Numbers\n';
		  error=true;
		  }
		 
		 
	 if(trim(cbrand) == '') {
		  msg=msg+'* Please enter Cartridge Brand\n';
		  error=true;
	  }
	  
	  
	  
	   if(trim(cnum) == '') {
		  msg=msg+'* Please enter Cartridge Number\n';
		  error=true;
	  }
	  
	  if(trim(remanufacture) == '') {
		  msg=msg+'* Do you want New /Remanufactured?\n';
		  error=true;
	  }
	  
	  

	  if(error) 
	   {
			alert(msg);
			return false;
	   }
	   
 }

function validate_email(email) {
   var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
   if(reg.test(email) == false) {
       return false;
   }
   else
   {
   		return true;
   }
}

function trim(str, chars) {
	return ltrim(rtrim(str, chars), chars);
}
 
function ltrim(str, chars) {
	chars = chars || "\\s";
	return str.replace(new RegExp("^[" + chars + "]+", "g"), "");
}
 
function rtrim(str, chars) {
	chars = chars || "\\s";
	return str.replace(new RegExp("[" + chars + "]+$", "g"), "");
}

function isInteger (s)
{
      var i;

      for (i = 0; i < s.length; i++)
      {
         var c = s.charAt(i);

         if (!isDigit(c)) return true;
      }

      return false;
}

function isDigit (c)
{
      return ((c >= "0") && (c <= "9"))
}