function wopen(link,wi,he) {
	
	var width = wi ;  
	var height = he ;
	var l = (screen.availWidth-width)/2 ;
	var t = (screen.availHeight-height)/2 ;
    	wincom = window.open(link ,"oswin","toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=1,resizable=0,width="+wi+",height="+he+",screenX="+l+",screenY="+t+",left="+l+",top="+t);
    
    	if (wincom) {
    		wincom.focus() ;
	} 
}

function tabbgcolor(tabid,col){
	
	tabid.style.backgroundColor=col;
}

function fielddel(f) {

	if (f.value == f.defaultValue) {
	
		f.value = "" ;
	}
}


function fieldset(f) {

	if (f.value == "") {
		
		f.value = f.defaultValue ;
	}
}


function fieldemp(f) {

	if (f.searchwords.value == f.searchwords.defaultValue) {
		
		f.searchwords.value = "" ;
	}
}