function blank(s){//returns true if the element is blank
	for(var i=0; i<s.length; i++){
		var c=s.charAt(i);
		if((c!=' ') && (c!='') && (c!='\n')) return false;
	}
	return true;
}
function allblank(f){
	for (var i = 0; i<f.elements.length; i++){
		if(f.elements[i].type=="text" || f.elements[i].type=="textarea"){
			if(!blank(f.elements[i].value)){
				return true;
			}
		}
	}
	return false;
}
function get_element(elm){
	if(document.all){
		if(document.all[elm]) var el=document.all[elm];
		else return false;
	}	
	else if(document.getElementById){
		if(document.getElementById(elm)) var el=document.getElementById(elm);
		else return false;
	}
	return el;
}
function alert_array(arr){
	var m="";
	for(var i=0;i<arr.length;i++){
		m+=arr[i]+"\n";
	}
	alert(m);
}
function preload(url){
	var im = new Image();
	im.src=url;
}
function removeSpaces(string) {
	var tstring = "";
	string = '' + string;
	splitstring = string.split(" ");
	for(i = 0; i < splitstring.length; i++)
	tstring += splitstring[i];
	return tstring;
}
function chkdelete(){//generic delete
	if(confirm(txt_delete[lang])) return true;
	else return false; 
}
function isNumeric(sText){
	var ValidChars = "0123456789";
	var IsNumber=true;
	if (ValidChars.indexOf(sText) == -1){
		return false;
	}
	else{
		return true;
	}
}
function head_fade(){
	setTimeout("fade_in_head()",5000);
	setTimeout("fade_out_head()",10000);
	setTimeout("head_fade()",10000);
}
var fade_speed=50;
var ims_head=new Array("images/fade_images/im1.jpg","images/fade_images/im2.jpg","images/fade_images/im3.jpg","images/fade_images/im4.jpg","images/fade_images/im5.jpg","images/fade_images/im6.jpg","images/fade_images/im7.jpg","images/fade_images/im8.jpg","images/fade_images/im9.jpg","images/fade_images/im10.jpg","images/fade_images/im11.jpg","images/fade_images/im13.jpg");
var im_current=1;
var f_step=0;
function fade_in_head(){
	f_step++;
	if(f_step>25){
		f_step=25;
		var im1=get_element("head_bottom");
		im_current++;
		if(im_current==ims_head.length) im_current=0;
		im1.src=ims_head[im_current];
	}
	else{
		var im2=get_element("head_top");
		im2.className="fade_"+f_step;
		setTimeout("fade_in_head()",fade_speed);
	}
}
function fade_out_head(){
	f_step--;
	if(f_step<0){
		f_step=0;
		var im1=get_element("head_top");
		im_current++;
		if(im_current==ims_head.length) im_current=0;
		im1.src=ims_head[im_current];
	}
	else{
		var im2=get_element("head_top");
		im2.className="fade_"+f_step;
		setTimeout("fade_out_head()",fade_speed);
	}
}