function home_swap_image( imgname ) {
	document.images['home_swap'].src='images/home_' + imgname + '.jpg' ;
}
function home_swap_image_back() {
	document.images['home_swap'].src='images/home_welcome.jpg' ;
}
function swap_image(imgsrc,imgname) {
	document.images[imgname].src=imgsrc ;
}
function preloadImages() {
	var d=document; 
	if(d.images) { 
		if(!d.p) d.p=new Array();
		var i,j=d.p.length,a=preloadImages.arguments; 
		for(i=0; i<a.length; i++)
			if (a[i].indexOf("#")!=0) { 
				d.p[j]=new Image; 
				d.p[j++].src=a[i];
			}
	}
}
function erPopUp( url, name, width, height, scrollbars ) { 
	var top  = "50"; 
	var left = "50"; 
 
	if( scrollbars == null ) scrollbars = "0"; 
 
	str  = ""; 
	str += "resizable=1,titlebar=0,menubar=0,"; 
	str += "toolbar=1,location=0,directories=0,status=0,"; 
	str += "scrollbars=" + scrollbars + ","; 
	str += "width=" + width + ","; 
	str += "height=" + height + ","; 
	str += "top=" + top + ","; 
	str += "left=" + left; 
 
	window.open( url, name, str ); 
}