/*
Rain Simulator
Created by Webworldx

iFusion http://forum.ifcode.com
*/

var RainIndexes = new Array();

function createNewRain(){
	var newRain = document.getElementById('myRain').cloneNode(true);
	newRain.style.display= "inline";
	RainIndexes[RainIndexes.length++] = new Array( Math.floor( (Math.random() * 600) - 300) , Math.floor( Math.random() * (window.screen.availWidth - 50) ));
	newRain.id = "rain" + (RainIndexes.length-1);
	newRain.style.top = RainIndexes[RainIndexes.length-1][0];
	newRain.style.left = RainIndexes[RainIndexes.length-1][1];
	
	window.document.body.appendChild(newRain);
}

function checkRainPosition(myVal){
	var cTop = document.body.clientHeight - 50;
	if( RainIndexes[myVal][0] >= cTop ){
		RainIndexes[myVal][0] = Math.floor( Math.random() * 700) - 400;
		RainIndexes[myVal][1] = Math.floor( Math.random() * (window.screen.availWidth - 50) );
	}
}

function moveAllRain(){
	val = 0;
	while(document.getElementById('rain' + val) != null){
		RainIndexes[val][0] += 10;
		RainIndexes[val][1] -= 5;
		document.getElementById('rain' + val).style.top = RainIndexes[val][0];
		document.getElementById('rain' + val).style.left = RainIndexes[val][1];
		checkRainPosition(val);
		val++;
	}
}

function loadAllRain(){
        var number_of_rain = 30;
	var creating_rain = 0;
	while(creating_rain < number_of_rain){
		createNewRain();
		creating_rain++;
	}
	window.setInterval( "moveAllRain()" , 50 );
}

window.onload = loadAllRain;