function newWnd(url,size_x,size_y){
	myWin= open(url, "displayWindow", 
    "width="+size_x+",height="+size_y+",status=no,toolbar=no,menubar=no");
}


function MM_preloadImages() {
	var d=document; 
	if(d.images){ 
		if(!d.MM_p) d.MM_p=new Array();
		
	var i,j=d.MM_p.length,a=MM_preloadImages.arguments; 
		for(i=0; i<a.length; i++)
			if (a[i].indexOf("#")!=0){ 
				d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];
			}
	}
}

function swapImage(base_img,img_id){
	var main_img = document.getElementById("main_img");
	var second_img = document.getElementById(img_id);
	if (main_img.src == second_img.src) return;
	second_img.src = main_img.src;
	main_img.src = base_img;	
}