function img_auto_size(p,w,h){
	var pw,ph;
	var c;
	pw = p.width;
	ph = p.height;
	if(w>0 && pw>w){ph=ph*(w/pw);pw=w;}
	if(h>0 && ph>h){pw=pw*(h/ph);ph=h;}
	p.width=pw;
	p.height=ph;
}

function mhHover(cls){
	event.srcElement.className = cls;
}

function checkNumber(par_val){
	if(par_val==""){
		return(false);
	}else{
		for(i=0; i<par_val.length; i++){
			if (par_val.substring(i, i+1)!="."){
				if (par_val.substring(i, i+1)<"0" || par_val.substring(i, i+1)>"9"){
					return(false);
				}
			}
		}
		return(true);
	}
}

function MM_showproductphoto(id,strname,f){
	var obj = document.getElementById("prophoto");
	if(obj){
		var msg = "<a href=\"/product/images/"+f+"\" title=\""+strname+"\" rel=\"lightbox\"><img src=\"/product/images/"+f+"\" hspace=\"0\" vspace=\"0\" border=\"0\" onload=\"javascript:img_auto_size(this,300,225)\" /></a>";
		obj.innerHTML=msg;
	}
}