function validquantity(totalcart)
{
	for(var i=0;i<totalcart;i++)
	{
		var x = eval('document.shoppingcart.qty_'+i+'.value');
		var y = eval('document.shoppingcart.qty_'+i+'.value.length');
		
		if(y >= 1 )
		{
			chk1 = "0123456789";
			for(ik=0;ik!=y;ik++)
			{
				ch1= x.charAt(ik);
				rtn1= chk1.indexOf(ch1);
				if(rtn1==-1)
				{
					alert("Please Put Valid Quantity for All Items");
					eval('document.shoppingcart.qty_'+i).focus();
					return false;
					break;
				}
			}
		
			if(x < '0' || y<='0')
			{
				alert("Please Put Valid Quantity for All Items");
				eval('document.shoppingcart.qty_'+i).focus();
				return false;
			}
			
		}else{
			alert("Please Put Valid Quantity for All Items");
			eval('document.shoppingcart.qty_'+i).focus();
			return false;
		}
	}	
}