function AbrirVentana(page,w,h) {
	var ancho=((screen.width-w)/2);
	var alto=((screen.height-h)/2);
	eval("pag=open('"+page+"','','toolbar=no,directories=no,menubar=no,scrollbars=no,resizable=no,width="+w+",height="+h+",top="+alto+",left="+ancho+"');");
}

function AbrirVentanaVertical(page,w,h) {
	var ancho=((screen.width-w)/2);
	var alto=((screen.height-h)/2);
	eval("pag=open('"+page+"','','toolbar=no,directories=no,menubar=no,scrollbars=1,resizable=no,width="+w+",height="+h+",top="+alto+",left="+ancho+"');");
}

function UpdateImage(file,w,h){
	var correct; 

	correct=0;
	image=new Image();
  	image.src=(file);	
	if(LimitAttach(document.all.form, document.all.form.uploadfile.value)) {		
		document.all.nueva.width=w;
		document.all.nueva.hight=h;
		document.nueva.src=file;
		return true;
	}
}		

function LimitAttach(form, file) {
	extArray = new Array(".gif", ".jpg");	

	var ancho=((screen.width - 100)/2);
	var alto=((screen.height - 100)/2);
	allowSubmit = false;
	if (!file) {
		alert ("Por favor ingrese el archivo grafico");
		return false;
	}
	while (file.indexOf("\\") != -1)
		file = file.slice(file.indexOf("\\") + 1);
	ext = file.slice(file.indexOf(".")).toLowerCase();
	for (var i = 0; i < extArray.length; i++) {
		if (extArray[i] == ext) { 
			allowSubmit = true; 
			break; 
		}
	}
	if (allowSubmit) {
		return true;
	} else {
		alert ("Usted puede utilizar unicamente archivos: " + (extArray.join("  ")) + "\nPor favor, seleccione un nuevo archivo e intentelo nuevamente");
		return false;
	}
}

function ReplaceString(string, match, replacement) {
  	var result = '';
  	var index = 0;
  	var lastIndex = index;
  	while (string.length > lastIndex) {
    	index = string.indexOf(match, lastIndex);
    	if (index == -1) { break }
    	result += string.substring(lastIndex, index) + replacement;
    	lastIndex = index + match.length;
  	}
  	result += string.substring(lastIndex, string.length);
  	return result; 
}


//Snow

var snowmax=50
var snowcolor=new Array("#aaaacc","#ddddFF","#ccccDD")
var snowtype=new Array("Times")
var snowletter="*"
var sinkspeed=0.8
var snowmaxsize=24
var snowminsize=10
var snowingzone=1

///////////////////////////////////////////////////////////////////////////
// CONFIGURATION ENDS HERE
///////////////////////////////////////////////////////////////////////////


// Do not edit below this line
var snow=new Array()
var marginbottom
var marginright
var timer
var i_snow=0
var x_mv=new Array();
var crds=new Array();
var lftrght=new Array();
var browserinfos=navigator.userAgent 
var ie5=document.all&&document.getElementById&&!browserinfos.match(/Opera/)
var ns6=document.getElementById&&!document.all
var opera=browserinfos.match(/Opera/)  
var browserok=ie5||ns6||opera

function randommaker(range) {		
	rand=Math.floor(range*Math.random())
    return rand
}

function initsnow() {
	if (ie5 || opera) {
		marginbottom = document.body.clientHeight
		marginright = document.body.clientWidth
	}
	else if (ns6) {
		marginbottom = window.innerHeight
		marginright = window.innerWidth
		}
	var snowsizerange=snowmaxsize-snowminsize
	for (i=0;i<=snowmax;i++) {
		crds[i] = 0;                      
    	lftrght[i] = Math.random()*15;         
    	x_mv[i] = 0.03 + Math.random()/10;
		snow[i]=document.getElementById("s"+i)
		snow[i].style.fontFamily=snowtype[randommaker(snowtype.length)]
		snow[i].size=randommaker(snowsizerange)+snowminsize
		snow[i].style.fontSize=snow[i].size
		snow[i].style.color=snowcolor[randommaker(snowcolor.length)]
		snow[i].sink=sinkspeed*snow[i].size/5
		if (snowingzone==1) {snow[i].posx=randommaker(marginright-snow[i].size)}
		if (snowingzone==2) {snow[i].posx=randommaker(marginright/2-snow[i].size)}
		if (snowingzone==3) {snow[i].posx=randommaker(marginright/2-snow[i].size)+marginright/4}
		if (snowingzone==4) {snow[i].posx=randommaker(marginright/2-snow[i].size)+marginright/2}
		snow[i].posy=randommaker(6*marginbottom-marginbottom-6*snow[i].size)
		//alert(snow[i].posx)
		snow[i].style.left=snow[i].posx + "px"
		snow[i].style.top=snow[i].posy + "px"
	}
	movesnow()
}

function movesnow() {
	for (i=0;i<=snowmax;i++) {
		crds[i] += x_mv[i];
		snow[i].posy+=snow[i].sink
		snow[i].style.left=(snow[i].posx+lftrght[i]*Math.sin(crds[i])) + "px"
		snow[i].style.top=snow[i].posy + "px"
		
		if (snow[i].posy>=marginbottom-6*snow[i].size || parseInt(snow[i].style.left)>(marginright-3*lftrght[i])){
			if (snowingzone==1) {snow[i].posx=randommaker(marginright-snow[i].size)}
			if (snowingzone==2) {snow[i].posx=randommaker(marginright/2-snow[i].size)}
			if (snowingzone==3) {snow[i].posx=randommaker(marginright/2-snow[i].size)+marginright/4}
			if (snowingzone==4) {snow[i].posx=randommaker(marginright/2-snow[i].size)+marginright/2}
			snow[i].posy=0
		}
	}
	var timer=setTimeout("movesnow()",50)
}

//for (i=0;i<=snowmax;i++) {
//	document.write("<div id='s"+i+"' style='position:absolute;visibility: visible;left: 0px;top:-"+snowmaxsize+" px'>"+snowletter+"</div>")
//}