// Defining "indexOf" function for Internet Explorer
// It returns the index of the first occurance of an item in the array

if(!Array.indexOf){
    Array.prototype.indexOf = function(obj, start){
        for(var i = ( start || 0 ); i < this.length; i++){
            if(this[i] == obj){ return i; }
        }
    }
}

// Defining addEvent function since Internet Explorer does not support the official way of adding events

function addEvent( obj, type, fn ){
	if (obj.addEventListener)
		obj.addEventListener( type, fn, false );
	else if (obj.attachEvent)
	{
		obj["e"+type+fn] = fn;
		obj[type+fn] = function() { obj["e"+type+fn]( window.event ); }
		obj.attachEvent( "on"+type, obj[type+fn] );
	}
}

function inputWatermark(){
	if(inputs.length < 2 || inputs.length%2 != 0){
		alert('Wrong usage - please read the source comments!');
	}

	for (i = 0; i < inputs.length; i++){
		if(i%2 == 0 && (document.getElementById(inputs[i]) || document.getElementsByName(inputs[i])[0])){
			var cur = (document.getElementById(inputs[i])) ? (document.getElementById(inputs[i])) : (document.getElementsByName(inputs[i])[0]);
			cur.value=inputs[i + 1];
			addEvent(cur,"focus",onFocusHandler);
			addEvent(cur,"blur",onBlurHandler);
		}
	}
}

function onFocusHandler(){
	var inpname = this.id ? this.id : this.name;
	if(this.value == '' || this.value == inputs[inputs.indexOf(inpname) + 1]){
		this.value = '';
	}
}

function onBlurHandler(){
	var inpname = this.id ? this.id : this.name;
	if(this.value == ''){
		this.value = inputs[inputs.indexOf(inpname) + 1];
	}
}

addEvent(window,"load",inputWatermark);