function confirmation(val)
{
	var answer = confirm(val+'?');
	if(answer)
		return true;
	else
		return false;
}
function AllowOnlyNumeric()
{
    // Get the ASCII value of the key that the user entered
    var key = window.event.keyCode;

    // Verify if the key entered was a numeric character (0-9) or a decimal (.) or space
    if ( (key > 47 && key < 58) || key == 46 || key == 47 || key == 37 || key == 32)
        // If it was, then allow the entry to continue
        return;
    else
        // If it was not, then dispose the key and continue with entry
        window.event.returnValue = null;
}
function validation()
{
	var total_emission = document.getElementById('total_emission').value;
	var total_tree = document.getElementById('total_tree').value;
	var total_cost = document.getElementById('total_cost').value;
	var tonnes = document.getElementById('tonnes').value;
	var trees = document.getElementById('trees').value;
	var money = document.getElementById('money').value;
	var type = document.getElementById('type').value;
	var d_min_tonnes = document.getElementById('d_min_tonnes').value;
	var d_cost_per_tonne = document.getElementById('d_cost_per_tonne').value;
	var d_cost_per_tree = document.getElementById('d_cost_per_tree').value;
	
	trees = Number(trees);
	var min_trees = Number((d_cost_per_tonne/d_cost_per_tree).toFixed(0));
	money = Number(money);
	var min_money = Number((d_cost_per_tonne*d_min_tonnes).toFixed(2));
	if(type <2 && Number(total_emission)+Number(total_tree)+Number(total_cost) == 0)
	{
		alert('Please nominate the amount of emissions to offset.');
		return false;
	}
	else if(type == 2 && tonnes < d_min_tonnes)
	{
		alert('You must nominate not less than '+d_min_tonnes+' tonnes of C02-e.');
		return false;		
	}
	else if(type == 3 && trees < min_trees)
	{
		alert('You must plant not less than '+min_trees+' trees.');
		return false;		
	}
	else if(type == 4 && money < min_money)
	{
		alert('You must purchase not less than '+min_money+' gift.');
		return false;		
	}
	else
		return true;
}
function admin_validation(type)
{
	var errors = 0;
	for(i=0; i<document.admin.elements.length; i++)
	{
		if((document.admin.elements[i].type == 'text' && document.admin.elements[i].value == '') || (document.admin.elements[i].type == 'textarea' && document.admin.elements[i].value == '') || (document.admin.elements[i].type == 'file' && document.admin.elements[i].value == ''))
		{
			if(document.admin.elements[i].id == 'photo')
			{
				if(type != 'edit')
				{
					errors++;
					document.admin.elements[i].style.background='#ff3333'
				}
			}
			else
			{
				errors++;
				document.admin.elements[i].style.background='#ff3333'
			}
		}
		else if(document.admin.elements[i].id != 'delete')
			document.admin.elements[i].style.background='#ffffff'
	}
	if(errors >0)
	{
		alert('All fields must be fields.\nUse 0 if value is not known.');
		return false;
	}
	else
		return true;
}
function cc_expriy_date(mth, yr)
{
	var currentTime = new Date();
	var year = currentTime.getFullYear();
	var month = (currentTime.getMonth()+1);
	
	if(yr < year)
		return false;
	else if(yr == year && mth<month)
		return false;
	else
		return true;
}