function foc(elem,def)
{
	if(elem.value==def)
	{
		elem.value='';
	}
	return true;
}
function blr(elem,def)
{
	if(elem.value=='')
	{
		elem.value=def;
	}
	return true;
}
function maskKeyPress(objEvent) 
{
	var iKeyCode = (window.event) ? window.event.keyCode : objEvent.which;
  
    if((iKeyCode>=48 && iKeyCode<=57)||(iKeyCode==8)||(iKeyCode==46)) return true;
    return false;
}

function validate(frm,type){
	//all-purpose form validation function
	//give form elements class="validate" to perform validation
	//could be enhanced to display label text instead of form name, perhaps?
	//would need to get reference to label first, then form
	//for the moment, name form elements as you would like them to be displayed, but with underscore, e.g. full_name
	//does this element need validating?
	for(i=0;i<frm.elements.length;i++){
		el=frm.elements[i];
		str=el.value;
		strDisplayName=el.name.replace('_',' ')
		aryV=el.className.split('_');
		if(aryV[0]=='validate'){
			//first, check presence
			if(str.length<1){
				alert('Please provide ' + strDisplayName);
					  //name.replace('_',' '));
				return false;
			}else{
				switch(aryV[1]){
					case 'number':
						//spaces, brackets,+ and  - are allowed
						re=/[\s()+-]/g;
						str=el.value.replace(re,'');
						re=/^\d+$/;
					break;
					case 'email':
						//nothing fancy, just checks for presence of @ and . with at least one character between each
						//1@2.3 is valid, for example
						re=/.+@.+\..+/gi;
					break;
					default:
						re='';
					break;
				}
				if(re!=''){
					if(str.search(re)==-1){
						alert('Please provide a valid ' + strDisplayName);
						return false;
					}	
				}
			}
		}	
	}
	return true;
}

function addressFiller(chk){
	//allows visible pre-filling of delivery address if javascript supported
	var frm = document.frmCheckout;
	var d = $('#dsame');
	fill=false;
	aryNames=new Array('name','address','postcode','tel');
	if(chk.checked){
		fill=true;
	}
	
	//fill boxes with values
	newValue=' ';
	for(i=0;i<aryNames.length;i++){
		eval('elem = frm.' + aryNames[i] + ';');
		eval('delem = frm.d' + aryNames[i] + ';');
		if(fill){
			newValue = elem.value;
			delem.disabled=true;
			delem.value = newValue;
		} else {
			delem.disabled=false;
		}
	}
}


function attachEvents(){
	//allows visible pre-filling of delivery address if javascript supported
	var d = $('#dsame');
	if(d){
		d.onclick=function(){addressFiller(this);};
	}
}


//this is outside all functions
if(document.getElementById){
	document.onload=attachEvents();
}

$(document).ready(function(){
   $("#sb1i input").focus(function(event){
     $(this).css("background", "white");
   });
   $("#sb1i input").blur(function(event){
        if($(this).val() == "") {
        	$(this).css("background", "none");
        }
   });
});